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Finding the Fourth Proportional to 135,604.31, 203,359.25 and 55,619.55

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Solution

The fourth proportional to 135,604.31, 203,359.25 and 55,619.55 is: 83,409.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,604.31 : 203,359.25 = 55,619.55 : x
  2. Step 2: Convert to fraction form
    135,604.31/203,359.25 = 55,619.55/x
  3. Step 3: Cross multiply
    135,604.31x = 203,359.25 × 55,619.55
  4. Step 4: Simplify right side
    135,604.31x = 11,310,750,112.39
  5. Step 5: Solve for x
    x = 11,310,750,112.39/135,604.31
  6. Step 6: Final answer
    x = 83,409.96

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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.