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Finding the Fourth Proportional to 139,396.44, 192,366.59 and 75,733.68

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Solution

The fourth proportional to 139,396.44, 192,366.59 and 75,733.68 is: 104,512.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,396.44 : 192,366.59 = 75,733.68 : x
  2. Step 2: Convert to fraction form
    139,396.44/192,366.59 = 75,733.68/x
  3. Step 3: Cross multiply
    139,396.44x = 192,366.59 × 75,733.68
  4. Step 4: Simplify right side
    139,396.44x = 14,568,629,391.08
  5. Step 5: Solve for x
    x = 14,568,629,391.08/139,396.44
  6. Step 6: Final answer
    x = 104,512.21

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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.