Home / 135,889.11-187,520.70-75,463.61

Finding the Fourth Proportional to 135,889.11, 187,520.70 and 75,463.61

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Solution

The fourth proportional to 135,889.11, 187,520.70 and 75,463.61 is: 104,136.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,889.11 : 187,520.70 = 75,463.61 : x
  2. Step 2: Convert to fraction form
    135,889.11/187,520.70 = 75,463.61/x
  3. Step 3: Cross multiply
    135,889.11x = 187,520.70 × 75,463.61
  4. Step 4: Simplify right side
    135,889.11x = 14,150,988,034.12
  5. Step 5: Solve for x
    x = 14,150,988,034.12/135,889.11
  6. Step 6: Final answer
    x = 104,136.29

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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.