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Finding the Third Proportional to 81,276 and 176,616

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Solution

The third proportional to 81,276 and 176,616 is: 383,793.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,276 : 176,616 = 176,616 : x
  2. Step 2: Convert to fraction form
    81,276/176,616 = 176,616/x
  3. Step 3: Cross multiply
    81,276x = 176,616 × 176,616
  4. Step 4: Simplify right side
    81,276x = 31,193,211,456
  5. Step 5: Solve for x
    x = 31,193,211,456/81,276
  6. Step 6: Final answer
    x = 383,793.63

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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.