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Finding the Third Proportional to 81,427 and 179,423

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Solution

The third proportional to 81,427 and 179,423 is: 395,355.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427 : 179,423 = 179,423 : x
  2. Step 2: Convert to fraction form
    81,427/179,423 = 179,423/x
  3. Step 3: Cross multiply
    81,427x = 179,423 × 179,423
  4. Step 4: Simplify right side
    81,427x = 32,192,612,929
  5. Step 5: Solve for x
    x = 32,192,612,929/81,427
  6. Step 6: Final answer
    x = 395,355.51

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.