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Finding the Fourth Proportional to 156,502.26, 215,978.01 and 88,517.91

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Solution

The fourth proportional to 156,502.26, 215,978.01 and 88,517.91 is: 122,157.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,502.26 : 215,978.01 = 88,517.91 : x
  2. Step 2: Convert to fraction form
    156,502.26/215,978.01 = 88,517.91/x
  3. Step 3: Cross multiply
    156,502.26x = 215,978.01 × 88,517.91
  4. Step 4: Simplify right side
    156,502.26x = 19,117,921,204.73
  5. Step 5: Solve for x
    x = 19,117,921,204.73/156,502.26
  6. Step 6: Final answer
    x = 122,157.48

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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.