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Finding the Fourth Proportional to 155,517.78, 214,614.51 and 88,449.78

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Solution

The fourth proportional to 155,517.78, 214,614.51 and 88,449.78 is: 122,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,517.78 : 214,614.51 = 88,449.78 : x
  2. Step 2: Convert to fraction form
    155,517.78/214,614.51 = 88,449.78/x
  3. Step 3: Cross multiply
    155,517.78x = 214,614.51 × 88,449.78
  4. Step 4: Simplify right side
    155,517.78x = 18,982,606,194.31
  5. Step 5: Solve for x
    x = 18,982,606,194.31/155,517.78
  6. Step 6: Final answer
    x = 122,060.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.