Home / 217,942.38-326,806.92-129,172.02

Finding the Fourth Proportional to 217,942.38, 326,806.92 and 129,172.02

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Solution

The fourth proportional to 217,942.38, 326,806.92 and 129,172.02 is: 193,694.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,942.38 : 326,806.92 = 129,172.02 : x
  2. Step 2: Convert to fraction form
    217,942.38/326,806.92 = 129,172.02/x
  3. Step 3: Cross multiply
    217,942.38x = 326,806.92 × 129,172.02
  4. Step 4: Simplify right side
    217,942.38x = 42,214,310,006.38
  5. Step 5: Solve for x
    x = 42,214,310,006.38/217,942.38
  6. Step 6: Final answer
    x = 193,694.82

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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.