Home / 120,815.38-181,223.19-45,917.92

Finding the Fourth Proportional to 120,815.38, 181,223.19 and 45,917.92

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Solution

The fourth proportional to 120,815.38, 181,223.19 and 45,917.92 is: 68,876.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,815.38 : 181,223.19 = 45,917.92 : x
  2. Step 2: Convert to fraction form
    120,815.38/181,223.19 = 45,917.92/x
  3. Step 3: Cross multiply
    120,815.38x = 181,223.19 × 45,917.92
  4. Step 4: Simplify right side
    120,815.38x = 8,321,391,940.56
  5. Step 5: Solve for x
    x = 8,321,391,940.56/120,815.38
  6. Step 6: Final answer
    x = 68,876.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.