Home / 198,665.78-274,162.20-108,022.36

Finding the Fourth Proportional to 198,665.78, 274,162.20 and 108,022.36

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Solution

The fourth proportional to 198,665.78, 274,162.20 and 108,022.36 is: 149,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,665.78 : 274,162.20 = 108,022.36 : x
  2. Step 2: Convert to fraction form
    198,665.78/274,162.20 = 108,022.36/x
  3. Step 3: Cross multiply
    198,665.78x = 274,162.20 × 108,022.36
  4. Step 4: Simplify right side
    198,665.78x = 29,615,645,955.87
  5. Step 5: Solve for x
    x = 29,615,645,955.87/198,665.78
  6. Step 6: Final answer
    x = 149,072.71

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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.