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Finding the Fourth Proportional to 169,672.50, 254,396.42 and 80,939.70

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Solution

The fourth proportional to 169,672.50, 254,396.42 and 80,939.70 is: 121,355.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,672.50 : 254,396.42 = 80,939.70 : x
  2. Step 2: Convert to fraction form
    169,672.50/254,396.42 = 80,939.70/x
  3. Step 3: Cross multiply
    169,672.50x = 254,396.42 × 80,939.70
  4. Step 4: Simplify right side
    169,672.50x = 20,590,769,915.87
  5. Step 5: Solve for x
    x = 20,590,769,915.87/169,672.50
  6. Step 6: Final answer
    x = 121,355.96

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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.