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Finding the Third Proportional to 81,279 and 119,562.75

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Solution

The third proportional to 81,279 and 119,562.75 is: 175,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,279 : 119,562.75 = 119,562.75 : x
  2. Step 2: Convert to fraction form
    81,279/119,562.75 = 119,562.75/x
  3. Step 3: Cross multiply
    81,279x = 119,562.75 × 119,562.75
  4. Step 4: Simplify right side
    81,279x = 14,295,251,187.56
  5. Step 5: Solve for x
    x = 14,295,251,187.56/81,279
  6. Step 6: Final answer
    x = 175,878.78

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.