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Finding the Fourth Proportional to 146,913.20, 220,110.60 and 120,474.80

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Solution

The fourth proportional to 146,913.20, 220,110.60 and 120,474.80 is: 180,499.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,913.20 : 220,110.60 = 120,474.80 : x
  2. Step 2: Convert to fraction form
    146,913.20/220,110.60 = 120,474.80/x
  3. Step 3: Cross multiply
    146,913.20x = 220,110.60 × 120,474.80
  4. Step 4: Simplify right side
    146,913.20x = 26,517,780,512.88
  5. Step 5: Solve for x
    x = 26,517,780,512.88/146,913.20
  6. Step 6: Final answer
    x = 180,499.65

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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.