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Finding the Fourth Proportional to 132,601.20, 198,901.80 and 120,620.40

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Solution

The fourth proportional to 132,601.20, 198,901.80 and 120,620.40 is: 180,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,601.20 : 198,901.80 = 120,620.40 : x
  2. Step 2: Convert to fraction form
    132,601.20/198,901.80 = 120,620.40/x
  3. Step 3: Cross multiply
    132,601.20x = 198,901.80 × 120,620.40
  4. Step 4: Simplify right side
    132,601.20x = 23,991,614,676.72
  5. Step 5: Solve for x
    x = 23,991,614,676.72/132,601.20
  6. Step 6: Final answer
    x = 180,930.60

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1.5x scale

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.