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Finding the Third Proportional to 81,729.50 and 176,361

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Solution

The third proportional to 81,729.50 and 176,361 is: 380,562.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,729.50 : 176,361 = 176,361 : x
  2. Step 2: Convert to fraction form
    81,729.50/176,361 = 176,361/x
  3. Step 3: Cross multiply
    81,729.50x = 176,361 × 176,361
  4. Step 4: Simplify right side
    81,729.50x = 31,103,202,321
  5. Step 5: Solve for x
    x = 31,103,202,321/81,729.50
  6. Step 6: Final answer
    x = 380,562.74

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.