Home / 135,708.20-187,278.44-75,282.81

Finding the Fourth Proportional to 135,708.20, 187,278.44 and 75,282.81

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Solution

The fourth proportional to 135,708.20, 187,278.44 and 75,282.81 is: 103,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,708.20 : 187,278.44 = 75,282.81 : x
  2. Step 2: Convert to fraction form
    135,708.20/187,278.44 = 75,282.81/x
  3. Step 3: Cross multiply
    135,708.20x = 187,278.44 × 75,282.81
  4. Step 4: Simplify right side
    135,708.20x = 14,098,847,215.62
  5. Step 5: Solve for x
    x = 14,098,847,215.62/135,708.20
  6. Step 6: Final answer
    x = 103,890.90

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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.