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Finding the Fourth Proportional to 156,766.62, 216,340.27 and 88,781.91

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Solution

The fourth proportional to 156,766.62, 216,340.27 and 88,781.91 is: 122,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,766.62 : 216,340.27 = 88,781.91 : x
  2. Step 2: Convert to fraction form
    156,766.62/216,340.27 = 88,781.91/x
  3. Step 3: Cross multiply
    156,766.62x = 216,340.27 × 88,781.91
  4. Step 4: Simplify right side
    156,766.62x = 19,207,101,347.28
  5. Step 5: Solve for x
    x = 19,207,101,347.28/156,766.62
  6. Step 6: Final answer
    x = 122,520.35

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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.