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Finding the Fourth Proportional to 108,751.56, 150,198.72 and 74,864

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Solution

The fourth proportional to 108,751.56, 150,198.72 and 74,864 is: 103,396.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,751.56 : 150,198.72 = 74,864 : x
  2. Step 2: Convert to fraction form
    108,751.56/150,198.72 = 74,864/x
  3. Step 3: Cross multiply
    108,751.56x = 150,198.72 × 74,864
  4. Step 4: Simplify right side
    108,751.56x = 11,244,476,974.08
  5. Step 5: Solve for x
    x = 11,244,476,974.08/108,751.56
  6. Step 6: Final answer
    x = 103,396.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.