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Finding the Fourth Proportional to 138,063.48, 207,070.92 and 36,862.79

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Solution

The fourth proportional to 138,063.48, 207,070.92 and 36,862.79 is: 55,287.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,063.48 : 207,070.92 = 36,862.79 : x
  2. Step 2: Convert to fraction form
    138,063.48/207,070.92 = 36,862.79/x
  3. Step 3: Cross multiply
    138,063.48x = 207,070.92 × 36,862.79
  4. Step 4: Simplify right side
    138,063.48x = 7,633,211,839.07
  5. Step 5: Solve for x
    x = 7,633,211,839.07/138,063.48
  6. Step 6: Final answer
    x = 55,287.70

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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.