Home / 198,865.32-274,429.68-108,221.58

Finding the Fourth Proportional to 198,865.32, 274,429.68 and 108,221.58

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Solution

The fourth proportional to 198,865.32, 274,429.68 and 108,221.58 is: 149,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,865.32 : 274,429.68 = 108,221.58 : x
  2. Step 2: Convert to fraction form
    198,865.32/274,429.68 = 108,221.58/x
  3. Step 3: Cross multiply
    198,865.32x = 274,429.68 × 108,221.58
  4. Step 4: Simplify right side
    198,865.32x = 29,699,213,568.49
  5. Step 5: Solve for x
    x = 29,699,213,568.49/198,865.32
  6. Step 6: Final answer
    x = 149,343.35

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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.