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Finding the Fourth Proportional to 139,673.25, 192,753.46 and 79,246.44

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Solution

The fourth proportional to 139,673.25, 192,753.46 and 79,246.44 is: 109,362.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,673.25 : 192,753.46 = 79,246.44 : x
  2. Step 2: Convert to fraction form
    139,673.25/192,753.46 = 79,246.44/x
  3. Step 3: Cross multiply
    139,673.25x = 192,753.46 × 79,246.44
  4. Step 4: Simplify right side
    139,673.25x = 15,275,025,502.68
  5. Step 5: Solve for x
    x = 15,275,025,502.68/139,673.25
  6. Step 6: Final answer
    x = 109,362.57

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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.