Home / 261,150.62-391,782.33-81,232.62

Finding the Fourth Proportional to 261,150.62, 391,782.33 and 81,232.62

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Solution

The fourth proportional to 261,150.62, 391,782.33 and 81,232.62 is: 121,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,150.62 : 391,782.33 = 81,232.62 : x
  2. Step 2: Convert to fraction form
    261,150.62/391,782.33 = 81,232.62/x
  3. Step 3: Cross multiply
    261,150.62x = 391,782.33 × 81,232.62
  4. Step 4: Simplify right side
    261,150.62x = 31,825,504,729.44
  5. Step 5: Solve for x
    x = 31,825,504,729.44/261,150.62
  6. Step 6: Final answer
    x = 121,866.47

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1.5x scale

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.