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Finding the Fourth Proportional to 103,388.40, 155,104.20 and 33,274.80

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Solution

The fourth proportional to 103,388.40, 155,104.20 and 33,274.80 is: 49,919.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,388.40 : 155,104.20 = 33,274.80 : x
  2. Step 2: Convert to fraction form
    103,388.40/155,104.20 = 33,274.80/x
  3. Step 3: Cross multiply
    103,388.40x = 155,104.20 × 33,274.80
  4. Step 4: Simplify right side
    103,388.40x = 5,161,061,234.16
  5. Step 5: Solve for x
    x = 5,161,061,234.16/103,388.40
  6. Step 6: Final answer
    x = 49,919.15

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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.