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Finding the Fourth Proportional to 146,757.60, 220,136.40 and 76,620.60

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Solution

The fourth proportional to 146,757.60, 220,136.40 and 76,620.60 is: 114,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,757.60 : 220,136.40 = 76,620.60 : x
  2. Step 2: Convert to fraction form
    146,757.60/220,136.40 = 76,620.60/x
  3. Step 3: Cross multiply
    146,757.60x = 220,136.40 × 76,620.60
  4. Step 4: Simplify right side
    146,757.60x = 16,866,983,049.84
  5. Step 5: Solve for x
    x = 16,866,983,049.84/146,757.60
  6. Step 6: Final answer
    x = 114,930.90

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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.