Home / 154,423.20-231,343.20-79,287.60

Finding the Fourth Proportional to 154,423.20, 231,343.20 and 79,287.60

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Solution

The fourth proportional to 154,423.20, 231,343.20 and 79,287.60 is: 118,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,423.20 : 231,343.20 = 79,287.60 : x
  2. Step 2: Convert to fraction form
    154,423.20/231,343.20 = 79,287.60/x
  3. Step 3: Cross multiply
    154,423.20x = 231,343.20 × 79,287.60
  4. Step 4: Simplify right side
    154,423.20x = 18,342,647,104.32
  5. Step 5: Solve for x
    x = 18,342,647,104.32/154,423.20
  6. Step 6: Final answer
    x = 118,781.68

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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.