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Finding the Fourth Proportional to 203,930.70, 305,896.05 and 133,071.90

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Solution

The fourth proportional to 203,930.70, 305,896.05 and 133,071.90 is: 199,607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,930.70 : 305,896.05 = 133,071.90 : x
  2. Step 2: Convert to fraction form
    203,930.70/305,896.05 = 133,071.90/x
  3. Step 3: Cross multiply
    203,930.70x = 305,896.05 × 133,071.90
  4. Step 4: Simplify right side
    203,930.70x = 40,706,168,576.00
  5. Step 5: Solve for x
    x = 40,706,168,576.00/203,930.70
  6. Step 6: Final answer
    x = 199,607.85

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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.