Home / 139,441.52-192,436.68-79,023.92

Finding the Fourth Proportional to 139,441.52, 192,436.68 and 79,023.92

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Solution

The fourth proportional to 139,441.52, 192,436.68 and 79,023.92 is: 109,057.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,441.52 : 192,436.68 = 79,023.92 : x
  2. Step 2: Convert to fraction form
    139,441.52/192,436.68 = 79,023.92/x
  3. Step 3: Cross multiply
    139,441.52x = 192,436.68 × 79,023.92
  4. Step 4: Simplify right side
    139,441.52x = 15,207,100,805.39
  5. Step 5: Solve for x
    x = 15,207,100,805.39/139,441.52
  6. Step 6: Final answer
    x = 109,057.19

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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.