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Finding the Fourth Proportional to 111,375.60, 166,917.60 and 98,836.80

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Solution

The fourth proportional to 111,375.60, 166,917.60 and 98,836.80 is: 148,125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,375.60 : 166,917.60 = 98,836.80 : x
  2. Step 2: Convert to fraction form
    111,375.60/166,917.60 = 98,836.80/x
  3. Step 3: Cross multiply
    111,375.60x = 166,917.60 × 98,836.80
  4. Step 4: Simplify right side
    111,375.60x = 16,497,601,447.68
  5. Step 5: Solve for x
    x = 16,497,601,447.68/111,375.60
  6. Step 6: Final answer
    x = 148,125.81

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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.