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Finding the Fourth Proportional to 138,195.30, 207,171.45 and 93,677.70

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Solution

The fourth proportional to 138,195.30, 207,171.45 and 93,677.70 is: 140,434.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,195.30 : 207,171.45 = 93,677.70 : x
  2. Step 2: Convert to fraction form
    138,195.30/207,171.45 = 93,677.70/x
  3. Step 3: Cross multiply
    138,195.30x = 207,171.45 × 93,677.70
  4. Step 4: Simplify right side
    138,195.30x = 19,407,344,941.67
  5. Step 5: Solve for x
    x = 19,407,344,941.67/138,195.30
  6. Step 6: Final answer
    x = 140,434.19

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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.