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Finding the Fourth Proportional to 104,234.80, 156,121.80 and 80,676.40

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Solution

The fourth proportional to 104,234.80, 156,121.80 and 80,676.40 is: 120,836.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,234.80 : 156,121.80 = 80,676.40 : x
  2. Step 2: Convert to fraction form
    104,234.80/156,121.80 = 80,676.40/x
  3. Step 3: Cross multiply
    104,234.80x = 156,121.80 × 80,676.40
  4. Step 4: Simplify right side
    104,234.80x = 12,595,344,785.52
  5. Step 5: Solve for x
    x = 12,595,344,785.52/104,234.80
  6. Step 6: Final answer
    x = 120,836.27

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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.