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Finding the Fourth Proportional to 132,042.80, 198,112.80 and 43,299.20

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Solution

The fourth proportional to 132,042.80, 198,112.80 and 43,299.20 is: 64,964.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,042.80 : 198,112.80 = 43,299.20 : x
  2. Step 2: Convert to fraction form
    132,042.80/198,112.80 = 43,299.20/x
  3. Step 3: Cross multiply
    132,042.80x = 198,112.80 × 43,299.20
  4. Step 4: Simplify right side
    132,042.80x = 8,578,125,749.76
  5. Step 5: Solve for x
    x = 8,578,125,749.76/132,042.80
  6. Step 6: Final answer
    x = 64,964.74

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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.