Home / 198,934.65-298,292.91-78,869.97

Finding the Fourth Proportional to 198,934.65, 298,292.91 and 78,869.97

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Solution

The fourth proportional to 198,934.65, 298,292.91 and 78,869.97 is: 118,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,934.65 : 298,292.91 = 78,869.97 : x
  2. Step 2: Convert to fraction form
    198,934.65/298,292.91 = 78,869.97/x
  3. Step 3: Cross multiply
    198,934.65x = 298,292.91 × 78,869.97
  4. Step 4: Simplify right side
    198,934.65x = 23,526,352,862.91
  5. Step 5: Solve for x
    x = 23,526,352,862.91/198,934.65
  6. Step 6: Final answer
    x = 118,261.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.