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Finding the Third Proportional to 81,517.50 and 172,842.75

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Solution

The third proportional to 81,517.50 and 172,842.75 is: 366,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,517.50 : 172,842.75 = 172,842.75 : x
  2. Step 2: Convert to fraction form
    81,517.50/172,842.75 = 172,842.75/x
  3. Step 3: Cross multiply
    81,517.50x = 172,842.75 × 172,842.75
  4. Step 4: Simplify right side
    81,517.50x = 29,874,616,227.56
  5. Step 5: Solve for x
    x = 29,874,616,227.56/81,517.50
  6. Step 6: Final answer
    x = 366,481.02

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.