Home / 154,065.20-231,335.40-84,081.20

Finding the Fourth Proportional to 154,065.20, 231,335.40 and 84,081.20

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Solution

The fourth proportional to 154,065.20, 231,335.40 and 84,081.20 is: 126,251.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,065.20 : 231,335.40 = 84,081.20 : x
  2. Step 2: Convert to fraction form
    154,065.20/231,335.40 = 84,081.20/x
  3. Step 3: Cross multiply
    154,065.20x = 231,335.40 × 84,081.20
  4. Step 4: Simplify right side
    154,065.20x = 19,450,958,034.48
  5. Step 5: Solve for x
    x = 19,450,958,034.48/154,065.20
  6. Step 6: Final answer
    x = 126,251.47

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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.