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Finding the Fourth Proportional to 250,493.57, 375,660.16 and 81,968.21

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Solution

The fourth proportional to 250,493.57, 375,660.16 and 81,968.21 is: 122,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,493.57 : 375,660.16 = 81,968.21 : x
  2. Step 2: Convert to fraction form
    250,493.57/375,660.16 = 81,968.21/x
  3. Step 3: Cross multiply
    250,493.57x = 375,660.16 × 81,968.21
  4. Step 4: Simplify right side
    250,493.57x = 30,792,188,800.29
  5. Step 5: Solve for x
    x = 30,792,188,800.29/250,493.57
  6. Step 6: Final answer
    x = 122,926.07

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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.