Home / 198,815.45-274,368.13-108,171.48

Finding the Fourth Proportional to 198,815.45, 274,368.13 and 108,171.48

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Solution

The fourth proportional to 198,815.45, 274,368.13 and 108,171.48 is: 149,278.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,815.45 : 274,368.13 = 108,171.48 : x
  2. Step 2: Convert to fraction form
    198,815.45/274,368.13 = 108,171.48/x
  3. Step 3: Cross multiply
    198,815.45x = 274,368.13 × 108,171.48
  4. Step 4: Simplify right side
    198,815.45x = 29,678,805,315.09
  5. Step 5: Solve for x
    x = 29,678,805,315.09/198,815.45
  6. Step 6: Final answer
    x = 149,278.17

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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.