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Finding the Fourth Proportional to 139,676.22, 192,757.56 and 79,249.41

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Solution

The fourth proportional to 139,676.22, 192,757.56 and 79,249.41 is: 109,366.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,676.22 : 192,757.56 = 79,249.41 : x
  2. Step 2: Convert to fraction form
    139,676.22/192,757.56 = 79,249.41/x
  3. Step 3: Cross multiply
    139,676.22x = 192,757.56 × 79,249.41
  4. Step 4: Simplify right side
    139,676.22x = 15,275,922,605.85
  5. Step 5: Solve for x
    x = 15,275,922,605.85/139,676.22
  6. Step 6: Final answer
    x = 109,366.67

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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.