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Finding the Third Proportional to 83,551 and 129,436

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Solution

The third proportional to 83,551 and 129,436 is: 200,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,551 : 129,436 = 129,436 : x
  2. Step 2: Convert to fraction form
    83,551/129,436 = 129,436/x
  3. Step 3: Cross multiply
    83,551x = 129,436 × 129,436
  4. Step 4: Simplify right side
    83,551x = 16,753,678,096
  5. Step 5: Solve for x
    x = 16,753,678,096/83,551
  6. Step 6: Final answer
    x = 200,520.38

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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.