Home / 206,734.49-309,904.89-66,394.70

Finding the Fourth Proportional to 206,734.49, 309,904.89 and 66,394.70

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Solution

The fourth proportional to 206,734.49, 309,904.89 and 66,394.70 is: 99,528.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,734.49 : 309,904.89 = 66,394.70 : x
  2. Step 2: Convert to fraction form
    206,734.49/309,904.89 = 66,394.70/x
  3. Step 3: Cross multiply
    206,734.49x = 309,904.89 × 66,394.70
  4. Step 4: Simplify right side
    206,734.49x = 20,576,040,650.56
  5. Step 5: Solve for x
    x = 20,576,040,650.56/206,734.49
  6. Step 6: Final answer
    x = 99,528.83

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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.