Home / 139,400.68-192,370.98-75,738.28

Finding the Fourth Proportional to 139,400.68, 192,370.98 and 75,738.28

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Solution

The fourth proportional to 139,400.68, 192,370.98 and 75,738.28 is: 104,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,400.68 : 192,370.98 = 75,738.28 : x
  2. Step 2: Convert to fraction form
    139,400.68/192,370.98 = 75,738.28/x
  3. Step 3: Cross multiply
    139,400.68x = 192,370.98 × 75,738.28
  4. Step 4: Simplify right side
    139,400.68x = 14,569,847,147.11
  5. Step 5: Solve for x
    x = 14,569,847,147.11/139,400.68
  6. Step 6: Final answer
    x = 104,517.76

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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.