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Finding the Fourth Proportional to 159,245.80, 219,734.10 and 91,249.70

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Solution

The fourth proportional to 159,245.80, 219,734.10 and 91,249.70 is: 125,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,245.80 : 219,734.10 = 91,249.70 : x
  2. Step 2: Convert to fraction form
    159,245.80/219,734.10 = 91,249.70/x
  3. Step 3: Cross multiply
    159,245.80x = 219,734.10 × 91,249.70
  4. Step 4: Simplify right side
    159,245.80x = 20,050,670,704.77
  5. Step 5: Solve for x
    x = 20,050,670,704.77/159,245.80
  6. Step 6: Final answer
    x = 125,910.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.