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Finding the Fourth Proportional to 138,104.46, 207,159.48 and 43,332.66

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Solution

The fourth proportional to 138,104.46, 207,159.48 and 43,332.66 is: 64,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,104.46 : 207,159.48 = 43,332.66 : x
  2. Step 2: Convert to fraction form
    138,104.46/207,159.48 = 43,332.66/x
  3. Step 3: Cross multiply
    138,104.46x = 207,159.48 × 43,332.66
  4. Step 4: Simplify right side
    138,104.46x = 8,976,771,312.62
  5. Step 5: Solve for x
    x = 8,976,771,312.62/138,104.46
  6. Step 6: Final answer
    x = 64,999.87

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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.