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Finding the Fourth Proportional to 151,906.40, 227,859.60 and 81,047.60

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Solution

The fourth proportional to 151,906.40, 227,859.60 and 81,047.60 is: 121,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,906.40 : 227,859.60 = 81,047.60 : x
  2. Step 2: Convert to fraction form
    151,906.40/227,859.60 = 81,047.60/x
  3. Step 3: Cross multiply
    151,906.40x = 227,859.60 × 81,047.60
  4. Step 4: Simplify right side
    151,906.40x = 18,467,473,716.96
  5. Step 5: Solve for x
    x = 18,467,473,716.96/151,906.40
  6. Step 6: Final answer
    x = 121,571.40

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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.