Home / 206,386.36-309,593.94-81,727

Finding the Fourth Proportional to 206,386.36, 309,593.94 and 81,727

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Solution

The fourth proportional to 206,386.36, 309,593.94 and 81,727 is: 122,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,386.36 : 309,593.94 = 81,727 : x
  2. Step 2: Convert to fraction form
    206,386.36/309,593.94 = 81,727/x
  3. Step 3: Cross multiply
    206,386.36x = 309,593.94 × 81,727
  4. Step 4: Simplify right side
    206,386.36x = 25,302,183,934.38
  5. Step 5: Solve for x
    x = 25,302,183,934.38/206,386.36
  6. Step 6: Final answer
    x = 122,596.20

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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.