Home / 82,121.94-123,182.68-19,792.44

Finding the Fourth Proportional to 82,121.94, 123,182.68 and 19,792.44

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Solution

The fourth proportional to 82,121.94, 123,182.68 and 19,792.44 is: 29,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,121.94 : 123,182.68 = 19,792.44 : x
  2. Step 2: Convert to fraction form
    82,121.94/123,182.68 = 19,792.44/x
  3. Step 3: Cross multiply
    82,121.94x = 123,182.68 × 19,792.44
  4. Step 4: Simplify right side
    82,121.94x = 2,438,085,802.94
  5. Step 5: Solve for x
    x = 2,438,085,802.94/82,121.94
  6. Step 6: Final answer
    x = 29,688.60

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1.5x scale

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.