Home / 198,618.30-274,154.49-122,160.78

Finding the Fourth Proportional to 198,618.30, 274,154.49 and 122,160.78

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Solution

The fourth proportional to 198,618.30, 274,154.49 and 122,160.78 is: 168,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,618.30 : 274,154.49 = 122,160.78 : x
  2. Step 2: Convert to fraction form
    198,618.30/274,154.49 = 122,160.78/x
  3. Step 3: Cross multiply
    198,618.30x = 274,154.49 × 122,160.78
  4. Step 4: Simplify right side
    198,618.30x = 33,490,926,338.90
  5. Step 5: Solve for x
    x = 33,490,926,338.90/198,618.30
  6. Step 6: Final answer
    x = 168,619.54

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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.