Home / 143,959.38-198,789.33-90,336.66

Finding the Fourth Proportional to 143,959.38, 198,789.33 and 90,336.66

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Solution

The fourth proportional to 143,959.38, 198,789.33 and 90,336.66 is: 124,743.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,959.38 : 198,789.33 = 90,336.66 : x
  2. Step 2: Convert to fraction form
    143,959.38/198,789.33 = 90,336.66/x
  3. Step 3: Cross multiply
    143,959.38x = 198,789.33 × 90,336.66
  4. Step 4: Simplify right side
    143,959.38x = 17,957,964,115.84
  5. Step 5: Solve for x
    x = 17,957,964,115.84/143,959.38
  6. Step 6: Final answer
    x = 124,743.27

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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.