Home / 149,879.82-206,836.89-81,899.66

Finding the Fourth Proportional to 149,879.82, 206,836.89 and 81,899.66

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Solution

The fourth proportional to 149,879.82, 206,836.89 and 81,899.66 is: 113,023.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,879.82 : 206,836.89 = 81,899.66 : x
  2. Step 2: Convert to fraction form
    149,879.82/206,836.89 = 81,899.66/x
  3. Step 3: Cross multiply
    149,879.82x = 206,836.89 × 81,899.66
  4. Step 4: Simplify right side
    149,879.82x = 16,939,870,473.65
  5. Step 5: Solve for x
    x = 16,939,870,473.65/149,879.82
  6. Step 6: Final answer
    x = 113,023.03

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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.