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Finding the Fourth Proportional to 135,880.88, 203,443.40 and 69,177.44

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Solution

The fourth proportional to 135,880.88, 203,443.40 and 69,177.44 is: 103,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,880.88 : 203,443.40 = 69,177.44 : x
  2. Step 2: Convert to fraction form
    135,880.88/203,443.40 = 69,177.44/x
  3. Step 3: Cross multiply
    135,880.88x = 203,443.40 × 69,177.44
  4. Step 4: Simplify right side
    135,880.88x = 14,073,693,596.90
  5. Step 5: Solve for x
    x = 14,073,693,596.90/135,880.88
  6. Step 6: Final answer
    x = 103,573.76

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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.