Home / 193,090.20-289,635.30-68,443.80

Finding the Fourth Proportional to 193,090.20, 289,635.30 and 68,443.80

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Solution

The fourth proportional to 193,090.20, 289,635.30 and 68,443.80 is: 102,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,090.20 : 289,635.30 = 68,443.80 : x
  2. Step 2: Convert to fraction form
    193,090.20/289,635.30 = 68,443.80/x
  3. Step 3: Cross multiply
    193,090.20x = 289,635.30 × 68,443.80
  4. Step 4: Simplify right side
    193,090.20x = 19,823,740,546.14
  5. Step 5: Solve for x
    x = 19,823,740,546.14/193,090.20
  6. Step 6: Final answer
    x = 102,665.70

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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.