Home / 172,738.05-258,910.48-105,120.96

Finding the Fourth Proportional to 172,738.05, 258,910.48 and 105,120.96

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Solution

The fourth proportional to 172,738.05, 258,910.48 and 105,120.96 is: 157,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,738.05 : 258,910.48 = 105,120.96 : x
  2. Step 2: Convert to fraction form
    172,738.05/258,910.48 = 105,120.96/x
  3. Step 3: Cross multiply
    172,738.05x = 258,910.48 × 105,120.96
  4. Step 4: Simplify right side
    172,738.05x = 27,216,918,211.66
  5. Step 5: Solve for x
    x = 27,216,918,211.66/172,738.05
  6. Step 6: Final answer
    x = 157,561.80

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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.