Home / 206,579.45-309,869.24-66,436.49

Finding the Fourth Proportional to 206,579.45, 309,869.24 and 66,436.49

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Solution

The fourth proportional to 206,579.45, 309,869.24 and 66,436.49 is: 99,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,579.45 : 309,869.24 = 66,436.49 : x
  2. Step 2: Convert to fraction form
    206,579.45/309,869.24 = 66,436.49/x
  3. Step 3: Cross multiply
    206,579.45x = 309,869.24 × 66,436.49
  4. Step 4: Simplify right side
    206,579.45x = 20,586,622,783.04
  5. Step 5: Solve for x
    x = 20,586,622,783.04/206,579.45
  6. Step 6: Final answer
    x = 99,654.75

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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.