Home / 172,679.18-258,953.15-82,629.45

Finding the Fourth Proportional to 172,679.18, 258,953.15 and 82,629.45

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Solution

The fourth proportional to 172,679.18, 258,953.15 and 82,629.45 is: 123,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,679.18 : 258,953.15 = 82,629.45 : x
  2. Step 2: Convert to fraction form
    172,679.18/258,953.15 = 82,629.45/x
  3. Step 3: Cross multiply
    172,679.18x = 258,953.15 × 82,629.45
  4. Step 4: Simplify right side
    172,679.18x = 21,397,156,566.84
  5. Step 5: Solve for x
    x = 21,397,156,566.84/172,679.18
  6. Step 6: Final answer
    x = 123,912.78

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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.