Home / 154,615.20-231,995.70-115,249.20

Finding the Fourth Proportional to 154,615.20, 231,995.70 and 115,249.20

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Solution

The fourth proportional to 154,615.20, 231,995.70 and 115,249.20 is: 172,928.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,615.20 : 231,995.70 = 115,249.20 : x
  2. Step 2: Convert to fraction form
    154,615.20/231,995.70 = 115,249.20/x
  3. Step 3: Cross multiply
    154,615.20x = 231,995.70 × 115,249.20
  4. Step 4: Simplify right side
    154,615.20x = 26,737,318,828.44
  5. Step 5: Solve for x
    x = 26,737,318,828.44/154,615.20
  6. Step 6: Final answer
    x = 172,928.14

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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.