Home / 159,120.23-219,591.57-87,505.70

Finding the Fourth Proportional to 159,120.23, 219,591.57 and 87,505.70

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Solution

The fourth proportional to 159,120.23, 219,591.57 and 87,505.70 is: 120,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,120.23 : 219,591.57 = 87,505.70 : x
  2. Step 2: Convert to fraction form
    159,120.23/219,591.57 = 87,505.70/x
  3. Step 3: Cross multiply
    159,120.23x = 219,591.57 × 87,505.70
  4. Step 4: Simplify right side
    159,120.23x = 19,215,514,046.95
  5. Step 5: Solve for x
    x = 19,215,514,046.95/159,120.23
  6. Step 6: Final answer
    x = 120,760.97

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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.