Home / 118,221.28-177,131.44-71,375.76

Finding the Fourth Proportional to 118,221.28, 177,131.44 and 71,375.76

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Solution

The fourth proportional to 118,221.28, 177,131.44 and 71,375.76 is: 106,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,221.28 : 177,131.44 = 71,375.76 : x
  2. Step 2: Convert to fraction form
    118,221.28/177,131.44 = 71,375.76/x
  3. Step 3: Cross multiply
    118,221.28x = 177,131.44 × 71,375.76
  4. Step 4: Simplify right side
    118,221.28x = 12,642,891,149.89
  5. Step 5: Solve for x
    x = 12,642,891,149.89/118,221.28
  6. Step 6: Final answer
    x = 106,942.60

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1.5x scale

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.