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Finding the Fourth Proportional to 111,872.13, 167,866.56 and 45,361.41

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Solution

The fourth proportional to 111,872.13, 167,866.56 and 45,361.41 is: 68,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,872.13 : 167,866.56 = 45,361.41 : x
  2. Step 2: Convert to fraction form
    111,872.13/167,866.56 = 45,361.41/x
  3. Step 3: Cross multiply
    111,872.13x = 167,866.56 × 45,361.41
  4. Step 4: Simplify right side
    111,872.13x = 7,614,663,853.45
  5. Step 5: Solve for x
    x = 7,614,663,853.45/111,872.13
  6. Step 6: Final answer
    x = 68,065.78

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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.