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Finding the Third Proportional to 81,321.75 and 126,901.13

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Solution

The third proportional to 81,321.75 and 126,901.13 is: 198,026.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,321.75 : 126,901.13 = 126,901.13 : x
  2. Step 2: Convert to fraction form
    81,321.75/126,901.13 = 126,901.13/x
  3. Step 3: Cross multiply
    81,321.75x = 126,901.13 × 126,901.13
  4. Step 4: Simplify right side
    81,321.75x = 16,103,895,526.27
  5. Step 5: Solve for x
    x = 16,103,895,526.27/81,321.75
  6. Step 6: Final answer
    x = 198,026.92

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.