Home / 198,815.88-274,368.74-108,171.91

Finding the Fourth Proportional to 198,815.88, 274,368.74 and 108,171.91

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Solution

The fourth proportional to 198,815.88, 274,368.74 and 108,171.91 is: 149,278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,815.88 : 274,368.74 = 108,171.91 : x
  2. Step 2: Convert to fraction form
    198,815.88/274,368.74 = 108,171.91/x
  3. Step 3: Cross multiply
    198,815.88x = 274,368.74 × 108,171.91
  4. Step 4: Simplify right side
    198,815.88x = 29,678,990,452.19
  5. Step 5: Solve for x
    x = 29,678,990,452.19/198,815.88
  6. Step 6: Final answer
    x = 149,278.77

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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.