Home / 198,918.70-274,513.56-108,280.54

Finding the Fourth Proportional to 198,918.70, 274,513.56 and 108,280.54

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Solution

The fourth proportional to 198,918.70, 274,513.56 and 108,280.54 is: 149,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,918.70 : 274,513.56 = 108,280.54 : x
  2. Step 2: Convert to fraction form
    198,918.70/274,513.56 = 108,280.54/x
  3. Step 3: Cross multiply
    198,918.70x = 274,513.56 × 108,280.54
  4. Step 4: Simplify right side
    198,918.70x = 29,724,476,514.12
  5. Step 5: Solve for x
    x = 29,724,476,514.12/198,918.70
  6. Step 6: Final answer
    x = 149,430.28

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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.