Home / 198,520.34-274,001.28-122,105.12

Finding the Fourth Proportional to 198,520.34, 274,001.28 and 122,105.12

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Solution

The fourth proportional to 198,520.34, 274,001.28 and 122,105.12 is: 168,531.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,520.34 : 274,001.28 = 122,105.12 : x
  2. Step 2: Convert to fraction form
    198,520.34/274,001.28 = 122,105.12/x
  3. Step 3: Cross multiply
    198,520.34x = 274,001.28 × 122,105.12
  4. Step 4: Simplify right side
    198,520.34x = 33,456,959,174.55
  5. Step 5: Solve for x
    x = 33,456,959,174.55/198,520.34
  6. Step 6: Final answer
    x = 168,531.64

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1.5x scale

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.