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Finding the Fourth Proportional to 151,805.40, 227,343.60 and 81,529.80

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Solution

The fourth proportional to 151,805.40, 227,343.60 and 81,529.80 is: 122,098.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,805.40 : 227,343.60 = 81,529.80 : x
  2. Step 2: Convert to fraction form
    151,805.40/227,343.60 = 81,529.80/x
  3. Step 3: Cross multiply
    151,805.40x = 227,343.60 × 81,529.80
  4. Step 4: Simplify right side
    151,805.40x = 18,535,278,239.28
  5. Step 5: Solve for x
    x = 18,535,278,239.28/151,805.40
  6. Step 6: Final answer
    x = 122,098.94

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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.