Home / 87,400-131,531

Finding the Third Proportional to 87,400 and 131,531

Calculator

Solution

The third proportional to 87,400 and 131,531 is: 197,945.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,400 : 131,531 = 131,531 : x
  2. Step 2: Convert to fraction form
    87,400/131,531 = 131,531/x
  3. Step 3: Cross multiply
    87,400x = 131,531 × 131,531
  4. Step 4: Simplify right side
    87,400x = 17,300,403,961
  5. Step 5: Solve for x
    x = 17,300,403,961/87,400
  6. Step 6: Final answer
    x = 197,945.13

Related Problems

Find third proportional to 43,700 and 65,765.50
Half scale
Find third proportional to 174,800 and 263,062
Double scale
Find third proportional to 87,402 and 131,534
Similar ratio
Find third proportional to 131,100 and 197,296.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.