Home / 99,170.20-136,854.72-54,458.20

Finding the Fourth Proportional to 99,170.20, 136,854.72 and 54,458.20

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Solution

The fourth proportional to 99,170.20, 136,854.72 and 54,458.20 is: 75,152.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,170.20 : 136,854.72 = 54,458.20 : x
  2. Step 2: Convert to fraction form
    99,170.20/136,854.72 = 54,458.20/x
  3. Step 3: Cross multiply
    99,170.20x = 136,854.72 × 54,458.20
  4. Step 4: Simplify right side
    99,170.20x = 7,452,861,712.70
  5. Step 5: Solve for x
    x = 7,452,861,712.70/99,170.20
  6. Step 6: Final answer
    x = 75,152.23

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1.5x scale

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.