Home / 149,895.96-206,857-81,912.96

Finding the Fourth Proportional to 149,895.96, 206,857 and 81,912.96

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Solution

The fourth proportional to 149,895.96, 206,857 and 81,912.96 is: 113,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,895.96 : 206,857 = 81,912.96 : x
  2. Step 2: Convert to fraction form
    149,895.96/206,857 = 81,912.96/x
  3. Step 3: Cross multiply
    149,895.96x = 206,857 × 81,912.96
  4. Step 4: Simplify right side
    149,895.96x = 16,944,269,166.72
  5. Step 5: Solve for x
    x = 16,944,269,166.72/149,895.96
  6. Step 6: Final answer
    x = 113,040.20

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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.