Home / 86,854-137,642

Finding the Third Proportional to 86,854 and 137,642

Calculator

Solution

The third proportional to 86,854 and 137,642 is: 218,128.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,854 : 137,642 = 137,642 : x
  2. Step 2: Convert to fraction form
    86,854/137,642 = 137,642/x
  3. Step 3: Cross multiply
    86,854x = 137,642 × 137,642
  4. Step 4: Simplify right side
    86,854x = 18,945,320,164
  5. Step 5: Solve for x
    x = 18,945,320,164/86,854
  6. Step 6: Final answer
    x = 218,128.36

Related Problems

Find third proportional to 43,427 and 68,821
Half scale
Find third proportional to 173,708 and 275,284
Double scale
Find third proportional to 86,856 and 137,645
Similar ratio
Find third proportional to 130,281 and 206,463
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.