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Finding the Third Proportional to 81,472 and 176,672

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Solution

The third proportional to 81,472 and 176,672 is: 383,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,472 : 176,672 = 176,672 : x
  2. Step 2: Convert to fraction form
    81,472/176,672 = 176,672/x
  3. Step 3: Cross multiply
    81,472x = 176,672 × 176,672
  4. Step 4: Simplify right side
    81,472x = 31,212,995,584
  5. Step 5: Solve for x
    x = 31,212,995,584/81,472
  6. Step 6: Final answer
    x = 383,113.16

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.