Home / 86,420-131,377

Finding the Third Proportional to 86,420 and 131,377

Calculator

Solution

The third proportional to 86,420 and 131,377 is: 199,721.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,420 : 131,377 = 131,377 : x
  2. Step 2: Convert to fraction form
    86,420/131,377 = 131,377/x
  3. Step 3: Cross multiply
    86,420x = 131,377 × 131,377
  4. Step 4: Simplify right side
    86,420x = 17,259,916,129
  5. Step 5: Solve for x
    x = 17,259,916,129/86,420
  6. Step 6: Final answer
    x = 199,721.32

Related Problems

Find third proportional to 43,210 and 65,688.50
Half scale
Find third proportional to 172,840 and 262,754
Double scale
Find third proportional to 86,422 and 131,380
Similar ratio
Find third proportional to 129,630 and 197,065.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.