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Finding the Fourth Proportional to 131,190.70, 197,223.45 and 111,945.10

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Solution

The fourth proportional to 131,190.70, 197,223.45 and 111,945.10 is: 168,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,190.70 : 197,223.45 = 111,945.10 : x
  2. Step 2: Convert to fraction form
    131,190.70/197,223.45 = 111,945.10/x
  3. Step 3: Cross multiply
    131,190.70x = 197,223.45 × 111,945.10
  4. Step 4: Simplify right side
    131,190.70x = 22,078,198,832.60
  5. Step 5: Solve for x
    x = 22,078,198,832.60/131,190.70
  6. Step 6: Final answer
    x = 168,290.88

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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.