Home / 135,747.73-187,359.13-78,396.39

Finding the Fourth Proportional to 135,747.73, 187,359.13 and 78,396.39

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Solution

The fourth proportional to 135,747.73, 187,359.13 and 78,396.39 is: 108,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,747.73 : 187,359.13 = 78,396.39 : x
  2. Step 2: Convert to fraction form
    135,747.73/187,359.13 = 78,396.39/x
  3. Step 3: Cross multiply
    135,747.73x = 187,359.13 × 78,396.39
  4. Step 4: Simplify right side
    135,747.73x = 14,688,279,082.56
  5. Step 5: Solve for x
    x = 14,688,279,082.56/135,747.73
  6. Step 6: Final answer
    x = 108,202.76

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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.