Home / 185,591.90-256,117.50-100,708.96

Finding the Fourth Proportional to 185,591.90, 256,117.50 and 100,708.96

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Solution

The fourth proportional to 185,591.90, 256,117.50 and 100,708.96 is: 138,978.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,591.90 : 256,117.50 = 100,708.96 : x
  2. Step 2: Convert to fraction form
    185,591.90/256,117.50 = 100,708.96/x
  3. Step 3: Cross multiply
    185,591.90x = 256,117.50 × 100,708.96
  4. Step 4: Simplify right side
    185,591.90x = 25,793,325,278.67
  5. Step 5: Solve for x
    x = 25,793,325,278.67/185,591.90
  6. Step 6: Final answer
    x = 138,978.73

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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.