Home / 149,305.31-206,046.05-81,324.33

Finding the Fourth Proportional to 149,305.31, 206,046.05 and 81,324.33

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Solution

The fourth proportional to 149,305.31, 206,046.05 and 81,324.33 is: 112,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,305.31 : 206,046.05 = 81,324.33 : x
  2. Step 2: Convert to fraction form
    149,305.31/206,046.05 = 81,324.33/x
  3. Step 3: Cross multiply
    149,305.31x = 206,046.05 × 81,324.33
  4. Step 4: Simplify right side
    149,305.31x = 16,756,556,965.40
  5. Step 5: Solve for x
    x = 16,756,556,965.40/149,305.31
  6. Step 6: Final answer
    x = 112,230.15

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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.