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Finding the Fourth Proportional to 135,868.80, 203,812.20 and 36,027.60

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Solution

The fourth proportional to 135,868.80, 203,812.20 and 36,027.60 is: 54,043.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,868.80 : 203,812.20 = 36,027.60 : x
  2. Step 2: Convert to fraction form
    135,868.80/203,812.20 = 36,027.60/x
  3. Step 3: Cross multiply
    135,868.80x = 203,812.20 × 36,027.60
  4. Step 4: Simplify right side
    135,868.80x = 7,342,864,416.72
  5. Step 5: Solve for x
    x = 7,342,864,416.72/135,868.80
  6. Step 6: Final answer
    x = 54,043.79

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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.