Home / 198,888.20-274,494.63-111,683.09

Finding the Fourth Proportional to 198,888.20, 274,494.63 and 111,683.09

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Solution

The fourth proportional to 198,888.20, 274,494.63 and 111,683.09 is: 154,138.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,888.20 : 274,494.63 = 111,683.09 : x
  2. Step 2: Convert to fraction form
    198,888.20/274,494.63 = 111,683.09/x
  3. Step 3: Cross multiply
    198,888.20x = 274,494.63 × 111,683.09
  4. Step 4: Simplify right side
    198,888.20x = 30,656,407,094.33
  5. Step 5: Solve for x
    x = 30,656,407,094.33/198,888.20
  6. Step 6: Final answer
    x = 154,138.90

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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.