Question 251567
Each of the equal sides of an isosceles triangle is 4 times the third side. The perimeter of the triangle is 144 inches. Find the sides of the triangle

Let x be the length of the third side.

Then the other two "equal" sides are 4*x.

The perimeter then is:

x + 4*x + 4*x = 144
9*x = 144
x = 16

Calculate the other two sides substituting 16 for x.