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Finding the Fourth Proportional to 138,406, 207,447.70 and 63,534.04

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Solution

The fourth proportional to 138,406, 207,447.70 and 63,534.04 is: 95,227.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,406 : 207,447.70 = 63,534.04 : x
  2. Step 2: Convert to fraction form
    138,406/207,447.70 = 63,534.04/x
  3. Step 3: Cross multiply
    138,406x = 207,447.70 × 63,534.04
  4. Step 4: Simplify right side
    138,406x = 13,179,990,469.71
  5. Step 5: Solve for x
    x = 13,179,990,469.71/138,406
  6. Step 6: Final answer
    x = 95,227.02

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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.