Home / 131,057.52-180,863.20-74,471.28

Finding the Fourth Proportional to 131,057.52, 180,863.20 and 74,471.28

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Solution

The fourth proportional to 131,057.52, 180,863.20 and 74,471.28 is: 102,772.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,057.52 : 180,863.20 = 74,471.28 : x
  2. Step 2: Convert to fraction form
    131,057.52/180,863.20 = 74,471.28/x
  3. Step 3: Cross multiply
    131,057.52x = 180,863.20 × 74,471.28
  4. Step 4: Simplify right side
    131,057.52x = 13,469,114,008.90
  5. Step 5: Solve for x
    x = 13,469,114,008.90/131,057.52
  6. Step 6: Final answer
    x = 102,772.54

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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.