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Finding the Third Proportional to 100,394 and 133,840

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Solution

The third proportional to 100,394 and 133,840 is: 178,428.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,394 : 133,840 = 133,840 : x
  2. Step 2: Convert to fraction form
    100,394/133,840 = 133,840/x
  3. Step 3: Cross multiply
    100,394x = 133,840 × 133,840
  4. Step 4: Simplify right side
    100,394x = 17,913,145,600
  5. Step 5: Solve for x
    x = 17,913,145,600/100,394
  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.