Home / 261,145.22-391,745.97-111,401.33

Finding the Fourth Proportional to 261,145.22, 391,745.97 and 111,401.33

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Solution

The fourth proportional to 261,145.22, 391,745.97 and 111,401.33 is: 167,113.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,145.22 : 391,745.97 = 111,401.33 : x
  2. Step 2: Convert to fraction form
    261,145.22/391,745.97 = 111,401.33/x
  3. Step 3: Cross multiply
    261,145.22x = 391,745.97 × 111,401.33
  4. Step 4: Simplify right side
    261,145.22x = 43,641,020,121.41
  5. Step 5: Solve for x
    x = 43,641,020,121.41/261,145.22
  6. Step 6: Final answer
    x = 167,113.99

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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.