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Finding the Fourth Proportional to 139,592.44, 192,671.78 and 79,198.43

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Solution

The fourth proportional to 139,592.44, 192,671.78 and 79,198.43 is: 109,313.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,592.44 : 192,671.78 = 79,198.43 : x
  2. Step 2: Convert to fraction form
    139,592.44/192,671.78 = 79,198.43/x
  3. Step 3: Cross multiply
    139,592.44x = 192,671.78 × 79,198.43
  4. Step 4: Simplify right side
    139,592.44x = 15,259,302,481.31
  5. Step 5: Solve for x
    x = 15,259,302,481.31/139,592.44
  6. Step 6: Final answer
    x = 109,313.24

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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.