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Finding the Fourth Proportional to 149,361.72, 206,040.24 and 88,889.28

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Solution

The fourth proportional to 149,361.72, 206,040.24 and 88,889.28 is: 122,620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,361.72 : 206,040.24 = 88,889.28 : x
  2. Step 2: Convert to fraction form
    149,361.72/206,040.24 = 88,889.28/x
  3. Step 3: Cross multiply
    149,361.72x = 206,040.24 × 88,889.28
  4. Step 4: Simplify right side
    149,361.72x = 18,314,768,584.63
  5. Step 5: Solve for x
    x = 18,314,768,584.63/149,361.72
  6. Step 6: Final answer
    x = 122,620.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.