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Finding the Fourth Proportional to 111,975, 167,961.46 and 45,399.30

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Solution

The fourth proportional to 111,975, 167,961.46 and 45,399.30 is: 68,098.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,975 : 167,961.46 = 45,399.30 : x
  2. Step 2: Convert to fraction form
    111,975/167,961.46 = 45,399.30/x
  3. Step 3: Cross multiply
    111,975x = 167,961.46 × 45,399.30
  4. Step 4: Simplify right side
    111,975x = 7,625,332,710.98
  5. Step 5: Solve for x
    x = 7,625,332,710.98/111,975
  6. Step 6: Final answer
    x = 68,098.53

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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.