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Finding the Fourth Proportional to 139,672.25, 192,752.08 and 79,245.44

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Solution

The fourth proportional to 139,672.25, 192,752.08 and 79,245.44 is: 109,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,672.25 : 192,752.08 = 79,245.44 : x
  2. Step 2: Convert to fraction form
    139,672.25/192,752.08 = 79,245.44/x
  3. Step 3: Cross multiply
    139,672.25x = 192,752.08 × 79,245.44
  4. Step 4: Simplify right side
    139,672.25x = 15,274,723,390.52
  5. Step 5: Solve for x
    x = 15,274,723,390.52/139,672.25
  6. Step 6: Final answer
    x = 109,361.19

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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.