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Finding the Fourth Proportional to 143,912.58, 215,849.42 and 38,737.86

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Solution

The fourth proportional to 143,912.58, 215,849.42 and 38,737.86 is: 58,101.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,912.58 : 215,849.42 = 38,737.86 : x
  2. Step 2: Convert to fraction form
    143,912.58/215,849.42 = 38,737.86/x
  3. Step 3: Cross multiply
    143,912.58x = 215,849.42 × 38,737.86
  4. Step 4: Simplify right side
    143,912.58x = 8,361,543,340.10
  5. Step 5: Solve for x
    x = 8,361,543,340.10/143,912.58
  6. Step 6: Final answer
    x = 58,101.55

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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.