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Finding the Fourth Proportional to 169,431.69, 254,022.98 and 80,747.48

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Solution

The fourth proportional to 169,431.69, 254,022.98 and 80,747.48 is: 121,061.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,431.69 : 254,022.98 = 80,747.48 : x
  2. Step 2: Convert to fraction form
    169,431.69/254,022.98 = 80,747.48/x
  3. Step 3: Cross multiply
    169,431.69x = 254,022.98 × 80,747.48
  4. Step 4: Simplify right side
    169,431.69x = 20,511,713,823.24
  5. Step 5: Solve for x
    x = 20,511,713,823.24/169,431.69
  6. Step 6: Final answer
    x = 121,061.85

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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.