Home / 139,724.11-192,845.84-79,300.41

Finding the Fourth Proportional to 139,724.11, 192,845.84 and 79,300.41

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Solution

The fourth proportional to 139,724.11, 192,845.84 and 79,300.41 is: 109,449.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,724.11 : 192,845.84 = 79,300.41 : x
  2. Step 2: Convert to fraction form
    139,724.11/192,845.84 = 79,300.41/x
  3. Step 3: Cross multiply
    139,724.11x = 192,845.84 × 79,300.41
  4. Step 4: Simplify right side
    139,724.11x = 15,292,754,377.05
  5. Step 5: Solve for x
    x = 15,292,754,377.05/139,724.11
  6. Step 6: Final answer
    x = 109,449.65

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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.