Home / 139,747.20-209,604.60-39,922.80

Finding the Fourth Proportional to 139,747.20, 209,604.60 and 39,922.80

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Solution

The fourth proportional to 139,747.20, 209,604.60 and 39,922.80 is: 59,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,747.20 : 209,604.60 = 39,922.80 : x
  2. Step 2: Convert to fraction form
    139,747.20/209,604.60 = 39,922.80/x
  3. Step 3: Cross multiply
    139,747.20x = 209,604.60 × 39,922.80
  4. Step 4: Simplify right side
    139,747.20x = 8,368,002,524.88
  5. Step 5: Solve for x
    x = 8,368,002,524.88/139,747.20
  6. Step 6: Final answer
    x = 59,879.57

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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.