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Finding the Fourth Proportional to 156,065.59, 215,369.62 and 88,104.61

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Solution

The fourth proportional to 156,065.59, 215,369.62 and 88,104.61 is: 121,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,065.59 : 215,369.62 = 88,104.61 : x
  2. Step 2: Convert to fraction form
    156,065.59/215,369.62 = 88,104.61/x
  3. Step 3: Cross multiply
    156,065.59x = 215,369.62 × 88,104.61
  4. Step 4: Simplify right side
    156,065.59x = 18,975,056,375.95
  5. Step 5: Solve for x
    x = 18,975,056,375.95/156,065.59
  6. Step 6: Final answer
    x = 121,583.86

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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.