Home / 172,912.80-258,951.20-143,111.28

Finding the Fourth Proportional to 172,912.80, 258,951.20 and 143,111.28

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Solution

The fourth proportional to 172,912.80, 258,951.20 and 143,111.28 is: 214,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,912.80 : 258,951.20 = 143,111.28 : x
  2. Step 2: Convert to fraction form
    172,912.80/258,951.20 = 143,111.28/x
  3. Step 3: Cross multiply
    172,912.80x = 258,951.20 × 143,111.28
  4. Step 4: Simplify right side
    172,912.80x = 37,058,837,689.54
  5. Step 5: Solve for x
    x = 37,058,837,689.54/172,912.80
  6. Step 6: Final answer
    x = 214,320.96

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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.