Home / 139,839.03-192,979.13-82,479.69

Finding the Fourth Proportional to 139,839.03, 192,979.13 and 82,479.69

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Solution

The fourth proportional to 139,839.03, 192,979.13 and 82,479.69 is: 113,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,839.03 : 192,979.13 = 82,479.69 : x
  2. Step 2: Convert to fraction form
    139,839.03/192,979.13 = 82,479.69/x
  3. Step 3: Cross multiply
    139,839.03x = 192,979.13 × 82,479.69
  4. Step 4: Simplify right side
    139,839.03x = 15,916,858,406.47
  5. Step 5: Solve for x
    x = 15,916,858,406.47/139,839.03
  6. Step 6: Final answer
    x = 113,822.72

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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.