Home / 149,899.97-206,864.67-81,919.82

Finding the Fourth Proportional to 149,899.97, 206,864.67 and 81,919.82

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Solution

The fourth proportional to 149,899.97, 206,864.67 and 81,919.82 is: 113,050.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.97 : 206,864.67 = 81,919.82 : x
  2. Step 2: Convert to fraction form
    149,899.97/206,864.67 = 81,919.82/x
  3. Step 3: Cross multiply
    149,899.97x = 206,864.67 × 81,919.82
  4. Step 4: Simplify right side
    149,899.97x = 16,946,315,496.44
  5. Step 5: Solve for x
    x = 16,946,315,496.44/149,899.97
  6. Step 6: Final answer
    x = 113,050.83

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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.