Oi Marylia, eu ainda estou pegando o jeito com o bootstrap, já usei ele bastante, mas ainda não fiz o curso dele aqui do Alura, seria até uma boa dar uma olhada... mas eu fiz algumas modificações, vê se é isso que você precisa
<ul class="nav nav-tabs">
<li class="active"><a data-toggle="tab" href="#menu8">Loan Data</a></li>
<li><a data-toggle="tab" href="#menu9">Credit Data</a></li>
<li><a data-toggle="tab" href="#menu10">ACH/Credit Info</a></li>
</ul>
<div class="tab-content">
<div id="menu8" class="tab-pane fade in active">
<div class="clear"></div>
<div class="row">
<div class="col-md-8">
<div class="col-md-6">
<div class="form-group">
<label>Original Loan Value</label>
<input type="text" class="form-control" id="">
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Original Loan Term</label>
<input type="text" class="form-control" id="">
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Loan Start Date:</label>
<input type="text" class="form-control" id="">
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Loan End Date:</label>
<input type="text" class="form-control" id="">
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Pay off as of today:</label>
<input type="text" class="form-control" id="">
</div>
</div>
<div class="col-md-6">
<div class="form-group">
<label>Type of Loan:</label>
<input type="text" class="form-control" id="">
</div>
</div>
</div>
<div class="col-md-4">
<div class="card">
<div class="card-status bg-orange"></div>
<div class="card-body">
<div class="form-group">
<label>Loan Amount</label>
<input type="text" class="form-control" id="">
</div>
<div class="form-group">
<label>Loan Period</label>
<input type="text" class="form-control" id="">
</div>
<div class="form-group">
<label>Loan Type</label>
<select class="form-control"><option></option></select>
</div>
<div class="form-group">
<div class="col-md-12">
<button type="submit" class="btn btn-primary orange btn-pay">Calculate Payment</button>
</div>
</div>
<div class="clear"></div>
<div class="form-group">
<div class="col-md-12">
<button type="submit" class="btn btn-primary orange btn-pay">Request New Loan</button>
</div>
</div>
</div>
</div>
</div>
</div>