Home / 154,095.20-231,175.20-87,480.80

Finding the Fourth Proportional to 154,095.20, 231,175.20 and 87,480.80

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Solution

The fourth proportional to 154,095.20, 231,175.20 and 87,480.80 is: 131,239.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,095.20 : 231,175.20 = 87,480.80 : x
  2. Step 2: Convert to fraction form
    154,095.20/231,175.20 = 87,480.80/x
  3. Step 3: Cross multiply
    154,095.20x = 231,175.20 × 87,480.80
  4. Step 4: Simplify right side
    154,095.20x = 20,223,391,436.16
  5. Step 5: Solve for x
    x = 20,223,391,436.16/154,095.20
  6. Step 6: Final answer
    x = 131,239.59

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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.