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Finding the Fourth Proportional to 108,940.61, 150,319.09 and 61,195.97

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Solution

The fourth proportional to 108,940.61, 150,319.09 and 61,195.97 is: 84,439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,940.61 : 150,319.09 = 61,195.97 : x
  2. Step 2: Convert to fraction form
    108,940.61/150,319.09 = 61,195.97/x
  3. Step 3: Cross multiply
    108,940.61x = 150,319.09 × 61,195.97
  4. Step 4: Simplify right side
    108,940.61x = 9,198,922,974.36
  5. Step 5: Solve for x
    x = 9,198,922,974.36/108,940.61
  6. Step 6: Final answer
    x = 84,439.79

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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.