Home / 139,558.38-192,634.46-79,169.18

Finding the Fourth Proportional to 139,558.38, 192,634.46 and 79,169.18

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Solution

The fourth proportional to 139,558.38, 192,634.46 and 79,169.18 is: 109,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,558.38 : 192,634.46 = 79,169.18 : x
  2. Step 2: Convert to fraction form
    139,558.38/192,634.46 = 79,169.18/x
  3. Step 3: Cross multiply
    139,558.38x = 192,634.46 × 79,169.18
  4. Step 4: Simplify right side
    139,558.38x = 15,250,712,237.94
  5. Step 5: Solve for x
    x = 15,250,712,237.94/139,558.38
  6. Step 6: Final answer
    x = 109,278.37

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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.