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Finding the Third Proportional to 81,059 and 129,494

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Solution

The third proportional to 81,059 and 129,494 is: 206,870.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,059 : 129,494 = 129,494 : x
  2. Step 2: Convert to fraction form
    81,059/129,494 = 129,494/x
  3. Step 3: Cross multiply
    81,059x = 129,494 × 129,494
  4. Step 4: Simplify right side
    81,059x = 16,768,696,036
  5. Step 5: Solve for x
    x = 16,768,696,036/81,059
  6. Step 6: Final answer
    x = 206,870.26

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.