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Finding the Third Proportional to 83,470 and 129,354

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Solution

The third proportional to 83,470 and 129,354 is: 200,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,470 : 129,354 = 129,354 : x
  2. Step 2: Convert to fraction form
    83,470/129,354 = 129,354/x
  3. Step 3: Cross multiply
    83,470x = 129,354 × 129,354
  4. Step 4: Simplify right side
    83,470x = 16,732,457,316
  5. Step 5: Solve for x
    x = 16,732,457,316/83,470
  6. Step 6: Final answer
    x = 200,460.73

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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.