Home / 206,743.83-309,918.92-66,404.07

Finding the Fourth Proportional to 206,743.83, 309,918.92 and 66,404.07

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Solution

The fourth proportional to 206,743.83, 309,918.92 and 66,404.07 is: 99,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,743.83 : 309,918.92 = 66,404.07 : x
  2. Step 2: Convert to fraction form
    206,743.83/309,918.92 = 66,404.07/x
  3. Step 3: Cross multiply
    206,743.83x = 309,918.92 × 66,404.07
  4. Step 4: Simplify right side
    206,743.83x = 20,579,877,325.98
  5. Step 5: Solve for x
    x = 20,579,877,325.98/206,743.83
  6. Step 6: Final answer
    x = 99,542.89

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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.