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Finding the Fourth Proportional to 172,679.80, 238,234.91 and 104,647.70

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Solution

The fourth proportional to 172,679.80, 238,234.91 and 104,647.70 is: 144,375.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,679.80 : 238,234.91 = 104,647.70 : x
  2. Step 2: Convert to fraction form
    172,679.80/238,234.91 = 104,647.70/x
  3. Step 3: Cross multiply
    172,679.80x = 238,234.91 × 104,647.70
  4. Step 4: Simplify right side
    172,679.80x = 24,930,734,461.65
  5. Step 5: Solve for x
    x = 24,930,734,461.65/172,679.80
  6. Step 6: Final answer
    x = 144,375.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.