Home / 149,947.89-206,933.66-81,969.48

Finding the Fourth Proportional to 149,947.89, 206,933.66 and 81,969.48

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Solution

The fourth proportional to 149,947.89, 206,933.66 and 81,969.48 is: 113,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,947.89 : 206,933.66 = 81,969.48 : x
  2. Step 2: Convert to fraction form
    149,947.89/206,933.66 = 81,969.48/x
  3. Step 3: Cross multiply
    149,947.89x = 206,933.66 × 81,969.48
  4. Step 4: Simplify right side
    149,947.89x = 16,962,244,094.85
  5. Step 5: Solve for x
    x = 16,962,244,094.85/149,947.89
  6. Step 6: Final answer
    x = 113,120.93

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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.