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Finding the Third Proportional to 83,387.25 and 129,313.13

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Solution

The third proportional to 83,387.25 and 129,313.13 is: 200,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,387.25 : 129,313.13 = 129,313.13 : x
  2. Step 2: Convert to fraction form
    83,387.25/129,313.13 = 129,313.13/x
  3. Step 3: Cross multiply
    83,387.25x = 129,313.13 × 129,313.13
  4. Step 4: Simplify right side
    83,387.25x = 16,721,884,297.27
  5. Step 5: Solve for x
    x = 16,721,884,297.27/83,387.25
  6. Step 6: Final answer
    x = 200,532.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.