Home / 261,156.76-391,763.22-111,412.87

Finding the Fourth Proportional to 261,156.76, 391,763.22 and 111,412.87

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Solution

The fourth proportional to 261,156.76, 391,763.22 and 111,412.87 is: 167,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,156.76 : 391,763.22 = 111,412.87 : x
  2. Step 2: Convert to fraction form
    261,156.76/391,763.22 = 111,412.87/x
  3. Step 3: Cross multiply
    261,156.76x = 391,763.22 × 111,412.87
  4. Step 4: Simplify right side
    261,156.76x = 43,647,464,700.64
  5. Step 5: Solve for x
    x = 43,647,464,700.64/261,156.76
  6. Step 6: Final answer
    x = 167,131.28

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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.