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Finding the Fourth Proportional to 198,123, 273,414.54 and 108,699

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Solution

The fourth proportional to 198,123, 273,414.54 and 108,699 is: 150,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,123 : 273,414.54 = 108,699 : x
  2. Step 2: Convert to fraction form
    198,123/273,414.54 = 108,699/x
  3. Step 3: Cross multiply
    198,123x = 273,414.54 × 108,699
  4. Step 4: Simplify right side
    198,123x = 29,719,887,083.46
  5. Step 5: Solve for x
    x = 29,719,887,083.46/198,123
  6. Step 6: Final answer
    x = 150,007.25

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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.