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Finding the Fourth Proportional to 135,470.60, 203,436.30 and 100,449.80

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Solution

The fourth proportional to 135,470.60, 203,436.30 and 100,449.80 is: 150,845.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,470.60 : 203,436.30 = 100,449.80 : x
  2. Step 2: Convert to fraction form
    135,470.60/203,436.30 = 100,449.80/x
  3. Step 3: Cross multiply
    135,470.60x = 203,436.30 × 100,449.80
  4. Step 4: Simplify right side
    135,470.60x = 20,435,135,647.74
  5. Step 5: Solve for x
    x = 20,435,135,647.74/135,470.60
  6. Step 6: Final answer
    x = 150,845.54

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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.