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Finding the Fourth Proportional to 103,472.25, 155,350.26 and 53,586.78

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Solution

The fourth proportional to 103,472.25, 155,350.26 and 53,586.78 is: 80,453.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,472.25 : 155,350.26 = 53,586.78 : x
  2. Step 2: Convert to fraction form
    103,472.25/155,350.26 = 53,586.78/x
  3. Step 3: Cross multiply
    103,472.25x = 155,350.26 × 53,586.78
  4. Step 4: Simplify right side
    103,472.25x = 8,324,720,205.56
  5. Step 5: Solve for x
    x = 8,324,720,205.56/103,472.25
  6. Step 6: Final answer
    x = 80,453.65

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1.5x scale

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.