Home / 203,787.55-281,213.81-113,143.49

Finding the Fourth Proportional to 203,787.55, 281,213.81 and 113,143.49

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Solution

The fourth proportional to 203,787.55, 281,213.81 and 113,143.49 is: 156,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,787.55 : 281,213.81 = 113,143.49 : x
  2. Step 2: Convert to fraction form
    203,787.55/281,213.81 = 113,143.49/x
  3. Step 3: Cross multiply
    203,787.55x = 281,213.81 × 113,143.49
  4. Step 4: Simplify right side
    203,787.55x = 31,817,511,333.88
  5. Step 5: Solve for x
    x = 31,817,511,333.88/203,787.55
  6. Step 6: Final answer
    x = 156,130.79

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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.