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Finding the Fourth Proportional to 108,942.88, 150,357.54 and 66,525.88

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Solution

The fourth proportional to 108,942.88, 150,357.54 and 66,525.88 is: 91,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,942.88 : 150,357.54 = 66,525.88 : x
  2. Step 2: Convert to fraction form
    108,942.88/150,357.54 = 66,525.88/x
  3. Step 3: Cross multiply
    108,942.88x = 150,357.54 × 66,525.88
  4. Step 4: Simplify right side
    108,942.88x = 10,002,667,663.14
  5. Step 5: Solve for x
    x = 10,002,667,663.14/108,942.88
  6. Step 6: Final answer
    x = 91,815.71

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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.