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Finding the Third Proportional to 83,545 and 129,563

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Solution

The third proportional to 83,545 and 129,563 is: 200,928.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,545 : 129,563 = 129,563 : x
  2. Step 2: Convert to fraction form
    83,545/129,563 = 129,563/x
  3. Step 3: Cross multiply
    83,545x = 129,563 × 129,563
  4. Step 4: Simplify right side
    83,545x = 16,786,570,969
  5. Step 5: Solve for x
    x = 16,786,570,969/83,545
  6. Step 6: Final answer
    x = 200,928.49

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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.