Home / 149,872.24-206,821.27-81,887.75

Finding the Fourth Proportional to 149,872.24, 206,821.27 and 81,887.75

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Solution

The fourth proportional to 149,872.24, 206,821.27 and 81,887.75 is: 113,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,872.24 : 206,821.27 = 81,887.75 : x
  2. Step 2: Convert to fraction form
    149,872.24/206,821.27 = 81,887.75/x
  3. Step 3: Cross multiply
    149,872.24x = 206,821.27 × 81,887.75
  4. Step 4: Simplify right side
    149,872.24x = 16,936,128,452.44
  5. Step 5: Solve for x
    x = 16,936,128,452.44/149,872.24
  6. Step 6: Final answer
    x = 113,003.77

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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.