Home / 154,456.20-231,392.70-79,320.60

Finding the Fourth Proportional to 154,456.20, 231,392.70 and 79,320.60

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Solution

The fourth proportional to 154,456.20, 231,392.70 and 79,320.60 is: 118,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,456.20 : 231,392.70 = 79,320.60 : x
  2. Step 2: Convert to fraction form
    154,456.20/231,392.70 = 79,320.60/x
  3. Step 3: Cross multiply
    154,456.20x = 231,392.70 × 79,320.60
  4. Step 4: Simplify right side
    154,456.20x = 18,354,207,799.62
  5. Step 5: Solve for x
    x = 18,354,207,799.62/154,456.20
  6. Step 6: Final answer
    x = 118,831.15

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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.