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Finding the Fourth Proportional to 147,672.30, 203,787.72 and 80,604.30

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Solution

The fourth proportional to 147,672.30, 203,787.72 and 80,604.30 is: 111,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,672.30 : 203,787.72 = 80,604.30 : x
  2. Step 2: Convert to fraction form
    147,672.30/203,787.72 = 80,604.30/x
  3. Step 3: Cross multiply
    147,672.30x = 203,787.72 × 80,604.30
  4. Step 4: Simplify right side
    147,672.30x = 16,426,166,519.20
  5. Step 5: Solve for x
    x = 16,426,166,519.20/147,672.30
  6. Step 6: Final answer
    x = 111,233.90

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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.