Home / 155,829.20-215,046.60-88,759.76

Finding the Fourth Proportional to 155,829.20, 215,046.60 and 88,759.76

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Solution

The fourth proportional to 155,829.20, 215,046.60 and 88,759.76 is: 122,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,829.20 : 215,046.60 = 88,759.76 : x
  2. Step 2: Convert to fraction form
    155,829.20/215,046.60 = 88,759.76/x
  3. Step 3: Cross multiply
    155,829.20x = 215,046.60 × 88,759.76
  4. Step 4: Simplify right side
    155,829.20x = 19,087,484,604.82
  5. Step 5: Solve for x
    x = 19,087,484,604.82/155,829.20
  6. Step 6: Final answer
    x = 122,489.78

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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.