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Finding the Fourth Proportional to 132,672.80, 199,009.20 and 79,528.70

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Solution

The fourth proportional to 132,672.80, 199,009.20 and 79,528.70 is: 119,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,672.80 : 199,009.20 = 79,528.70 : x
  2. Step 2: Convert to fraction form
    132,672.80/199,009.20 = 79,528.70/x
  3. Step 3: Cross multiply
    132,672.80x = 199,009.20 × 79,528.70
  4. Step 4: Simplify right side
    132,672.80x = 15,826,942,964.04
  5. Step 5: Solve for x
    x = 15,826,942,964.04/132,672.80
  6. Step 6: Final answer
    x = 119,293.05

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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.