Home / 156,251.20-215,639.92-88,280.64

Finding the Fourth Proportional to 156,251.20, 215,639.92 and 88,280.64

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Solution

The fourth proportional to 156,251.20, 215,639.92 and 88,280.64 is: 121,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,251.20 : 215,639.92 = 88,280.64 : x
  2. Step 2: Convert to fraction form
    156,251.20/215,639.92 = 88,280.64/x
  3. Step 3: Cross multiply
    156,251.20x = 215,639.92 × 88,280.64
  4. Step 4: Simplify right side
    156,251.20x = 19,036,830,147.15
  5. Step 5: Solve for x
    x = 19,036,830,147.15/156,251.20
  6. Step 6: Final answer
    x = 121,834.78

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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.