Home / 204,145.92-306,121.68-77,792.40

Finding the Fourth Proportional to 204,145.92, 306,121.68 and 77,792.40

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Solution

The fourth proportional to 204,145.92, 306,121.68 and 77,792.40 is: 116,651.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,145.92 : 306,121.68 = 77,792.40 : x
  2. Step 2: Convert to fraction form
    204,145.92/306,121.68 = 77,792.40/x
  3. Step 3: Cross multiply
    204,145.92x = 306,121.68 × 77,792.40
  4. Step 4: Simplify right side
    204,145.92x = 23,813,940,179.23
  5. Step 5: Solve for x
    x = 23,813,940,179.23/204,145.92
  6. Step 6: Final answer
    x = 116,651.56

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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.