Home / 139,836.78-192,976.02-82,477.44

Finding the Fourth Proportional to 139,836.78, 192,976.02 and 82,477.44

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Solution

The fourth proportional to 139,836.78, 192,976.02 and 82,477.44 is: 113,819.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.78 : 192,976.02 = 82,477.44 : x
  2. Step 2: Convert to fraction form
    139,836.78/192,976.02 = 82,477.44/x
  3. Step 3: Cross multiply
    139,836.78x = 192,976.02 × 82,477.44
  4. Step 4: Simplify right side
    139,836.78x = 15,916,168,110.99
  5. Step 5: Solve for x
    x = 15,916,168,110.99/139,836.78
  6. Step 6: Final answer
    x = 113,819.61

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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.