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Finding the Fourth Proportional to 131,551.20, 197,229.60 and 72,453.60

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Solution

The fourth proportional to 131,551.20, 197,229.60 and 72,453.60 is: 108,626.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,551.20 : 197,229.60 = 72,453.60 : x
  2. Step 2: Convert to fraction form
    131,551.20/197,229.60 = 72,453.60/x
  3. Step 3: Cross multiply
    131,551.20x = 197,229.60 × 72,453.60
  4. Step 4: Simplify right side
    131,551.20x = 14,289,994,546.56
  5. Step 5: Solve for x
    x = 14,289,994,546.56/131,551.20
  6. Step 6: Final answer
    x = 108,626.87

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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.