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Finding the Third Proportional to 81,038 and 176,872

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Solution

The third proportional to 81,038 and 176,872 is: 386,037.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,038 : 176,872 = 176,872 : x
  2. Step 2: Convert to fraction form
    81,038/176,872 = 176,872/x
  3. Step 3: Cross multiply
    81,038x = 176,872 × 176,872
  4. Step 4: Simplify right side
    81,038x = 31,283,704,384
  5. Step 5: Solve for x
    x = 31,283,704,384/81,038
  6. Step 6: Final answer
    x = 386,037.47

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.