Home / 135,809.15-187,414.79-75,379.61

Finding the Fourth Proportional to 135,809.15, 187,414.79 and 75,379.61

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Solution

The fourth proportional to 135,809.15, 187,414.79 and 75,379.61 is: 104,022.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,809.15 : 187,414.79 = 75,379.61 : x
  2. Step 2: Convert to fraction form
    135,809.15/187,414.79 = 75,379.61/x
  3. Step 3: Cross multiply
    135,809.15x = 187,414.79 × 75,379.61
  4. Step 4: Simplify right side
    135,809.15x = 14,127,253,870.07
  5. Step 5: Solve for x
    x = 14,127,253,870.07/135,809.15
  6. Step 6: Final answer
    x = 104,022.85

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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.