Home / 203,787.80-281,230.47-113,149.61

Finding the Fourth Proportional to 203,787.80, 281,230.47 and 113,149.61

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Solution

The fourth proportional to 203,787.80, 281,230.47 and 113,149.61 is: 156,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,787.80 : 281,230.47 = 113,149.61 : x
  2. Step 2: Convert to fraction form
    203,787.80/281,230.47 = 113,149.61/x
  3. Step 3: Cross multiply
    203,787.80x = 281,230.47 × 113,149.61
  4. Step 4: Simplify right side
    203,787.80x = 31,821,118,000.62
  5. Step 5: Solve for x
    x = 31,821,118,000.62/203,787.80
  6. Step 6: Final answer
    x = 156,148.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.