Home / 149,975.16-206,965.69-81,992.44

Finding the Fourth Proportional to 149,975.16, 206,965.69 and 81,992.44

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Solution

The fourth proportional to 149,975.16, 206,965.69 and 81,992.44 is: 113,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,975.16 : 206,965.69 = 81,992.44 : x
  2. Step 2: Convert to fraction form
    149,975.16/206,965.69 = 81,992.44/x
  3. Step 3: Cross multiply
    149,975.16x = 206,965.69 × 81,992.44
  4. Step 4: Simplify right side
    149,975.16x = 16,969,621,919.38
  5. Step 5: Solve for x
    x = 16,969,621,919.38/149,975.16
  6. Step 6: Final answer
    x = 113,149.55

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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.