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Finding the Fourth Proportional to 128,151.60, 192,227.40 and 33,381.60

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Solution

The fourth proportional to 128,151.60, 192,227.40 and 33,381.60 is: 50,072.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.60 : 192,227.40 = 33,381.60 : x
  2. Step 2: Convert to fraction form
    128,151.60/192,227.40 = 33,381.60/x
  3. Step 3: Cross multiply
    128,151.60x = 192,227.40 × 33,381.60
  4. Step 4: Simplify right side
    128,151.60x = 6,416,858,175.84
  5. Step 5: Solve for x
    x = 6,416,858,175.84/128,151.60
  6. Step 6: Final answer
    x = 50,072.40

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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.