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Finding the Fourth Proportional to 111,338.80, 167,008.20 and 66,942.70

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Solution

The fourth proportional to 111,338.80, 167,008.20 and 66,942.70 is: 100,414.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,338.80 : 167,008.20 = 66,942.70 : x
  2. Step 2: Convert to fraction form
    111,338.80/167,008.20 = 66,942.70/x
  3. Step 3: Cross multiply
    111,338.80x = 167,008.20 × 66,942.70
  4. Step 4: Simplify right side
    111,338.80x = 11,179,979,830.14
  5. Step 5: Solve for x
    x = 11,179,979,830.14/111,338.80
  6. Step 6: Final answer
    x = 100,414.05

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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.