Home / 193,381.32-289,775.22-81,000

Finding the Fourth Proportional to 193,381.32, 289,775.22 and 81,000

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Solution

The fourth proportional to 193,381.32, 289,775.22 and 81,000 is: 121,375.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,381.32 : 289,775.22 = 81,000 : x
  2. Step 2: Convert to fraction form
    193,381.32/289,775.22 = 81,000/x
  3. Step 3: Cross multiply
    193,381.32x = 289,775.22 × 81,000
  4. Step 4: Simplify right side
    193,381.32x = 23,471,792,820.00
  5. Step 5: Solve for x
    x = 23,471,792,820.00/193,381.32
  6. Step 6: Final answer
    x = 121,375.70

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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.