Home / 139,403.88-192,380.22-75,745.80

Finding the Fourth Proportional to 139,403.88, 192,380.22 and 75,745.80

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Solution

The fourth proportional to 139,403.88, 192,380.22 and 75,745.80 is: 104,530.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,403.88 : 192,380.22 = 75,745.80 : x
  2. Step 2: Convert to fraction form
    139,403.88/192,380.22 = 75,745.80/x
  3. Step 3: Cross multiply
    139,403.88x = 192,380.22 × 75,745.80
  4. Step 4: Simplify right side
    139,403.88x = 14,571,993,668.08
  5. Step 5: Solve for x
    x = 14,571,993,668.08/139,403.88
  6. Step 6: Final answer
    x = 104,530.76

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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.