Home / 154,217.20-231,390.60-84,146.80

Finding the Fourth Proportional to 154,217.20, 231,390.60 and 84,146.80

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Solution

The fourth proportional to 154,217.20, 231,390.60 and 84,146.80 is: 126,255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,217.20 : 231,390.60 = 84,146.80 : x
  2. Step 2: Convert to fraction form
    154,217.20/231,390.60 = 84,146.80/x
  3. Step 3: Cross multiply
    154,217.20x = 231,390.60 × 84,146.80
  4. Step 4: Simplify right side
    154,217.20x = 19,470,778,540.08
  5. Step 5: Solve for x
    x = 19,470,778,540.08/154,217.20
  6. Step 6: Final answer
    x = 126,255.56

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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.