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Finding the Fourth Proportional to 181,145.95, 271,718.70 and 68,799.31

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Solution

The fourth proportional to 181,145.95, 271,718.70 and 68,799.31 is: 103,198.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,145.95 : 271,718.70 = 68,799.31 : x
  2. Step 2: Convert to fraction form
    181,145.95/271,718.70 = 68,799.31/x
  3. Step 3: Cross multiply
    181,145.95x = 271,718.70 × 68,799.31
  4. Step 4: Simplify right side
    181,145.95x = 18,694,057,715.50
  5. Step 5: Solve for x
    x = 18,694,057,715.50/181,145.95
  6. Step 6: Final answer
    x = 103,198.87

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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.