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Finding the Fourth Proportional to 111,361.02, 166,819.02 and 66,963.48

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Solution

The fourth proportional to 111,361.02, 166,819.02 and 66,963.48 is: 100,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,361.02 : 166,819.02 = 66,963.48 : x
  2. Step 2: Convert to fraction form
    111,361.02/166,819.02 = 66,963.48/x
  3. Step 3: Cross multiply
    111,361.02x = 166,819.02 × 66,963.48
  4. Step 4: Simplify right side
    111,361.02x = 11,170,782,109.39
  5. Step 5: Solve for x
    x = 11,170,782,109.39/111,361.02
  6. Step 6: Final answer
    x = 100,311.42

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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.