Home / 143,854.62-198,519.83-78,442.95

Finding the Fourth Proportional to 143,854.62, 198,519.83 and 78,442.95

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Solution

The fourth proportional to 143,854.62, 198,519.83 and 78,442.95 is: 108,251.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,854.62 : 198,519.83 = 78,442.95 : x
  2. Step 2: Convert to fraction form
    143,854.62/198,519.83 = 78,442.95/x
  3. Step 3: Cross multiply
    143,854.62x = 198,519.83 × 78,442.95
  4. Step 4: Simplify right side
    143,854.62x = 15,572,480,706.48
  5. Step 5: Solve for x
    x = 15,572,480,706.48/143,854.62
  6. Step 6: Final answer
    x = 108,251.52

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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.