Home / 185,391.20-278,043.24-85,489.04

Finding the Fourth Proportional to 185,391.20, 278,043.24 and 85,489.04

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Solution

The fourth proportional to 185,391.20, 278,043.24 and 85,489.04 is: 128,213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,391.20 : 278,043.24 = 85,489.04 : x
  2. Step 2: Convert to fraction form
    185,391.20/278,043.24 = 85,489.04/x
  3. Step 3: Cross multiply
    185,391.20x = 278,043.24 × 85,489.04
  4. Step 4: Simplify right side
    185,391.20x = 23,769,649,666.09
  5. Step 5: Solve for x
    x = 23,769,649,666.09/185,391.20
  6. Step 6: Final answer
    x = 128,213.47

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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.