Locate Profile for Round Tube

Hello, I searched and didn't find the answer, but I'm also new to SW and not sure if I'm using the correct terminology.

I have a sketch of a rectangle 49" x 72'".

I created a weldment using 1.25" x .125" Tube following that sketch.

The tube is centered on the sketch but I want the edge of the tube to follow the sketch, When I click on locate profile there are no points on the round tube to

Basically I want the inside dimensions of the Tubular frame to be the same dimensions as the rectangle. Can't figure out how to accomplish this.

SolidworksWeldments