Home / 149,872.24-206,821.24-81,887.72

Finding the Fourth Proportional to 149,872.24, 206,821.24 and 81,887.72

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Solution

The fourth proportional to 149,872.24, 206,821.24 and 81,887.72 is: 113,003.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,872.24 : 206,821.24 = 81,887.72 : x
  2. Step 2: Convert to fraction form
    149,872.24/206,821.24 = 81,887.72/x
  3. Step 3: Cross multiply
    149,872.24x = 206,821.24 × 81,887.72
  4. Step 4: Simplify right side
    149,872.24x = 16,936,119,791.17
  5. Step 5: Solve for x
    x = 16,936,119,791.17/149,872.24
  6. Step 6: Final answer
    x = 113,003.71

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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.