Home / 154,424.88-231,245.28-129,399.12

Finding the Fourth Proportional to 154,424.88, 231,245.28 and 129,399.12

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Solution

The fourth proportional to 154,424.88, 231,245.28 and 129,399.12 is: 193,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.88 : 231,245.28 = 129,399.12 : x
  2. Step 2: Convert to fraction form
    154,424.88/231,245.28 = 129,399.12/x
  3. Step 3: Cross multiply
    154,424.88x = 231,245.28 × 129,399.12
  4. Step 4: Simplify right side
    154,424.88x = 29,922,935,736.15
  5. Step 5: Solve for x
    x = 29,922,935,736.15/154,424.88
  6. Step 6: Final answer
    x = 193,770.17

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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.