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Finding the Fourth Proportional to 136,761.12, 205,134.24 and 36,919.92

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Solution

The fourth proportional to 136,761.12, 205,134.24 and 36,919.92 is: 55,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,761.12 : 205,134.24 = 36,919.92 : x
  2. Step 2: Convert to fraction form
    136,761.12/205,134.24 = 36,919.92/x
  3. Step 3: Cross multiply
    136,761.12x = 205,134.24 × 36,919.92
  4. Step 4: Simplify right side
    136,761.12x = 7,573,539,730.06
  5. Step 5: Solve for x
    x = 7,573,539,730.06/136,761.12
  6. Step 6: Final answer
    x = 55,377.87

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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.