Home / 206,022.07-309,163.11-87,693.22

Finding the Fourth Proportional to 206,022.07, 309,163.11 and 87,693.22

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Solution

The fourth proportional to 206,022.07, 309,163.11 and 87,693.22 is: 131,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,022.07 : 309,163.11 = 87,693.22 : x
  2. Step 2: Convert to fraction form
    206,022.07/309,163.11 = 87,693.22/x
  3. Step 3: Cross multiply
    206,022.07x = 309,163.11 × 87,693.22
  4. Step 4: Simplify right side
    206,022.07x = 27,111,508,621.11
  5. Step 5: Solve for x
    x = 27,111,508,621.11/206,022.07
  6. Step 6: Final answer
    x = 131,595.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.