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Finding the Third Proportional to 81,648 and 122,472

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Solution

The third proportional to 81,648 and 122,472 is: 183,708

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648 : 122,472 = 122,472 : x
  2. Step 2: Convert to fraction form
    81,648/122,472 = 122,472/x
  3. Step 3: Cross multiply
    81,648x = 122,472 × 122,472
  4. Step 4: Simplify right side
    81,648x = 14,999,390,784
  5. Step 5: Solve for x
    x = 14,999,390,784/81,648
  6. Step 6: Final answer
    x = 183,708

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.