Home / 137,720-291,975

Finding the Third Proportional to 137,720 and 291,975

Calculator

Solution

The third proportional to 137,720 and 291,975 is: 619,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,720 : 291,975 = 291,975 : x
  2. Step 2: Convert to fraction form
    137,720/291,975 = 291,975/x
  3. Step 3: Cross multiply
    137,720x = 291,975 × 291,975
  4. Step 4: Simplify right side
    137,720x = 85,249,400,625
  5. Step 5: Solve for x
    x = 85,249,400,625/137,720
  6. Step 6: Final answer
    x = 619,005.23

Related Problems

Find third proportional to 68,860 and 145,987.50
Half scale
Find third proportional to 275,440 and 583,950
Double scale
Find third proportional to 137,722 and 291,979
Similar ratio
Find third proportional to 206,580 and 437,962.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.