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Finding the Third Proportional to 100,392.50 and 133,839

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Solution

The third proportional to 100,392.50 and 133,839 is: 178,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,392.50 : 133,839 = 133,839 : x
  2. Step 2: Convert to fraction form
    100,392.50/133,839 = 133,839/x
  3. Step 3: Cross multiply
    100,392.50x = 133,839 × 133,839
  4. Step 4: Simplify right side
    100,392.50x = 17,912,877,921
  5. Step 5: Solve for x
    x = 17,912,877,921/100,392.50
  6. Step 6: Final answer
    x = 178,428.45

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.