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Finding the Fourth Proportional to 138,048.80, 206,951.70 and 93,531.20

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Solution

The fourth proportional to 138,048.80, 206,951.70 and 93,531.20 is: 140,214.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,048.80 : 206,951.70 = 93,531.20 : x
  2. Step 2: Convert to fraction form
    138,048.80/206,951.70 = 93,531.20/x
  3. Step 3: Cross multiply
    138,048.80x = 206,951.70 × 93,531.20
  4. Step 4: Simplify right side
    138,048.80x = 19,356,440,843.04
  5. Step 5: Solve for x
    x = 19,356,440,843.04/138,048.80
  6. Step 6: Final answer
    x = 140,214.48

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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.