Home / 154,590.40-231,885.92-84,431.68

Finding the Fourth Proportional to 154,590.40, 231,885.92 and 84,431.68

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Solution

The fourth proportional to 154,590.40, 231,885.92 and 84,431.68 is: 126,647.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,590.40 : 231,885.92 = 84,431.68 : x
  2. Step 2: Convert to fraction form
    154,590.40/231,885.92 = 84,431.68/x
  3. Step 3: Cross multiply
    154,590.40x = 231,885.92 × 84,431.68
  4. Step 4: Simplify right side
    154,590.40x = 19,578,517,793.95
  5. Step 5: Solve for x
    x = 19,578,517,793.95/154,590.40
  6. Step 6: Final answer
    x = 126,647.69

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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.