Home / 124,786.20-187,179.30-121,505.70

Finding the Fourth Proportional to 124,786.20, 187,179.30 and 121,505.70

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Solution

The fourth proportional to 124,786.20, 187,179.30 and 121,505.70 is: 182,258.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,786.20 : 187,179.30 = 121,505.70 : x
  2. Step 2: Convert to fraction form
    124,786.20/187,179.30 = 121,505.70/x
  3. Step 3: Cross multiply
    124,786.20x = 187,179.30 × 121,505.70
  4. Step 4: Simplify right side
    124,786.20x = 22,743,351,872.01
  5. Step 5: Solve for x
    x = 22,743,351,872.01/124,786.20
  6. Step 6: Final answer
    x = 182,258.55

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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.