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Finding the Fourth Proportional to 132,382.40, 198,573.60 and 79,764.80

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Solution

The fourth proportional to 132,382.40, 198,573.60 and 79,764.80 is: 119,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,382.40 : 198,573.60 = 79,764.80 : x
  2. Step 2: Convert to fraction form
    132,382.40/198,573.60 = 79,764.80/x
  3. Step 3: Cross multiply
    132,382.40x = 198,573.60 × 79,764.80
  4. Step 4: Simplify right side
    132,382.40x = 15,839,183,489.28
  5. Step 5: Solve for x
    x = 15,839,183,489.28/132,382.40
  6. Step 6: Final answer
    x = 119,647.20

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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.