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Finding the Fourth Proportional to 172,797.71, 259,240.30 and 72,906.48

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Solution

The fourth proportional to 172,797.71, 259,240.30 and 72,906.48 is: 109,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,797.71 : 259,240.30 = 72,906.48 : x
  2. Step 2: Convert to fraction form
    172,797.71/259,240.30 = 72,906.48/x
  3. Step 3: Cross multiply
    172,797.71x = 259,240.30 × 72,906.48
  4. Step 4: Simplify right side
    172,797.71x = 18,900,297,564.88
  5. Step 5: Solve for x
    x = 18,900,297,564.88/172,797.71
  6. Step 6: Final answer
    x = 109,378.17

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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.