Home / 206,942.45-285,683.92-135,431.70

Finding the Fourth Proportional to 206,942.45, 285,683.92 and 135,431.70

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Solution

The fourth proportional to 206,942.45, 285,683.92 and 135,431.70 is: 186,963.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,942.45 : 285,683.92 = 135,431.70 : x
  2. Step 2: Convert to fraction form
    206,942.45/285,683.92 = 135,431.70/x
  3. Step 3: Cross multiply
    206,942.45x = 285,683.92 × 135,431.70
  4. Step 4: Simplify right side
    206,942.45x = 38,690,656,842.69
  5. Step 5: Solve for x
    x = 38,690,656,842.69/206,942.45
  6. Step 6: Final answer
    x = 186,963.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.