Home / 87,325.60-131,146.80-76,439.20

Finding the Fourth Proportional to 87,325.60, 131,146.80 and 76,439.20

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Solution

The fourth proportional to 87,325.60, 131,146.80 and 76,439.20 is: 114,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,325.60 : 131,146.80 = 76,439.20 : x
  2. Step 2: Convert to fraction form
    87,325.60/131,146.80 = 76,439.20/x
  3. Step 3: Cross multiply
    87,325.60x = 131,146.80 × 76,439.20
  4. Step 4: Simplify right side
    87,325.60x = 10,024,756,474.56
  5. Step 5: Solve for x
    x = 10,024,756,474.56/87,325.60
  6. Step 6: Final answer
    x = 114,797.45

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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.