Home / 221,105.76-305,175.20-140,517.60

Finding the Fourth Proportional to 221,105.76, 305,175.20 and 140,517.60

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Solution

The fourth proportional to 221,105.76, 305,175.20 and 140,517.60 is: 193,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,105.76 : 305,175.20 = 140,517.60 : x
  2. Step 2: Convert to fraction form
    221,105.76/305,175.20 = 140,517.60/x
  3. Step 3: Cross multiply
    221,105.76x = 305,175.20 × 140,517.60
  4. Step 4: Simplify right side
    221,105.76x = 42,882,486,683.52
  5. Step 5: Solve for x
    x = 42,882,486,683.52/221,105.76
  6. Step 6: Final answer
    x = 193,945.59

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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.