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Finding the Fourth Proportional to 110,979.60, 166,469.40 and 75,550.20

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Solution

The fourth proportional to 110,979.60, 166,469.40 and 75,550.20 is: 113,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,979.60 : 166,469.40 = 75,550.20 : x
  2. Step 2: Convert to fraction form
    110,979.60/166,469.40 = 75,550.20/x
  3. Step 3: Cross multiply
    110,979.60x = 166,469.40 × 75,550.20
  4. Step 4: Simplify right side
    110,979.60x = 12,576,796,463.88
  5. Step 5: Solve for x
    x = 12,576,796,463.88/110,979.60
  6. Step 6: Final answer
    x = 113,325.30

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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.