Home / 206,153.78-309,036.69-111,241.71

Finding the Fourth Proportional to 206,153.78, 309,036.69 and 111,241.71

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Solution

The fourth proportional to 206,153.78, 309,036.69 and 111,241.71 is: 166,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,153.78 : 309,036.69 = 111,241.71 : x
  2. Step 2: Convert to fraction form
    206,153.78/309,036.69 = 111,241.71/x
  3. Step 3: Cross multiply
    206,153.78x = 309,036.69 × 111,241.71
  4. Step 4: Simplify right side
    206,153.78x = 34,377,769,848.34
  5. Step 5: Solve for x
    x = 34,377,769,848.34/206,153.78
  6. Step 6: Final answer
    x = 166,757.90

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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.