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Finding the Fourth Proportional to 169,751.75, 254,378.40 and 85,395.97

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Solution

The fourth proportional to 169,751.75, 254,378.40 and 85,395.97 is: 127,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,751.75 : 254,378.40 = 85,395.97 : x
  2. Step 2: Convert to fraction form
    169,751.75/254,378.40 = 85,395.97/x
  3. Step 3: Cross multiply
    169,751.75x = 254,378.40 × 85,395.97
  4. Step 4: Simplify right side
    169,751.75x = 21,722,890,452.96
  5. Step 5: Solve for x
    x = 21,722,890,452.96/169,751.75
  6. Step 6: Final answer
    x = 127,968.58

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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.