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Finding the Fourth Proportional to 131,195.20, 197,230.20 and 111,949.60

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Solution

The fourth proportional to 131,195.20, 197,230.20 and 111,949.60 is: 168,297.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,195.20 : 197,230.20 = 111,949.60 : x
  2. Step 2: Convert to fraction form
    131,195.20/197,230.20 = 111,949.60/x
  3. Step 3: Cross multiply
    131,195.20x = 197,230.20 × 111,949.60
  4. Step 4: Simplify right side
    131,195.20x = 22,079,841,997.92
  5. Step 5: Solve for x
    x = 22,079,841,997.92/131,195.20
  6. Step 6: Final answer
    x = 168,297.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.