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Finding the Fourth Proportional to 172,730.70, 259,171.34 and 60,491.43

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Solution

The fourth proportional to 172,730.70, 259,171.34 and 60,491.43 is: 90,763.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,730.70 : 259,171.34 = 60,491.43 : x
  2. Step 2: Convert to fraction form
    172,730.70/259,171.34 = 60,491.43/x
  3. Step 3: Cross multiply
    172,730.70x = 259,171.34 × 60,491.43
  4. Step 4: Simplify right side
    172,730.70x = 15,677,644,971.62
  5. Step 5: Solve for x
    x = 15,677,644,971.62/172,730.70
  6. Step 6: Final answer
    x = 90,763.51

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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.