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Finding the Fourth Proportional to 135,704.70, 203,557.05 and 123,238.80

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Solution

The fourth proportional to 135,704.70, 203,557.05 and 123,238.80 is: 184,858.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,704.70 : 203,557.05 = 123,238.80 : x
  2. Step 2: Convert to fraction form
    135,704.70/203,557.05 = 123,238.80/x
  3. Step 3: Cross multiply
    135,704.70x = 203,557.05 × 123,238.80
  4. Step 4: Simplify right side
    135,704.70x = 25,086,126,573.54
  5. Step 5: Solve for x
    x = 25,086,126,573.54/135,704.70
  6. Step 6: Final answer
    x = 184,858.20

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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.