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Finding the Fourth Proportional to 163,299.10, 225,335.34 and 91,687

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Solution

The fourth proportional to 163,299.10, 225,335.34 and 91,687 is: 126,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,299.10 : 225,335.34 = 91,687 : x
  2. Step 2: Convert to fraction form
    163,299.10/225,335.34 = 91,687/x
  3. Step 3: Cross multiply
    163,299.10x = 225,335.34 × 91,687
  4. Step 4: Simplify right side
    163,299.10x = 20,660,321,318.58
  5. Step 5: Solve for x
    x = 20,660,321,318.58/163,299.10
  6. Step 6: Final answer
    x = 126,518.28

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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.