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Finding the Fourth Proportional to 203,930.70, 305,896.05 and 54,194.10

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Solution

The fourth proportional to 203,930.70, 305,896.05 and 54,194.10 is: 81,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,930.70 : 305,896.05 = 54,194.10 : x
  2. Step 2: Convert to fraction form
    203,930.70/305,896.05 = 54,194.10/x
  3. Step 3: Cross multiply
    203,930.70x = 305,896.05 × 54,194.10
  4. Step 4: Simplify right side
    203,930.70x = 16,577,761,123.31
  5. Step 5: Solve for x
    x = 16,577,761,123.31/203,930.70
  6. Step 6: Final answer
    x = 81,291.15

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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.