Home / 193,156.92-289,664.40-66,764.76

Finding the Fourth Proportional to 193,156.92, 289,664.40 and 66,764.76

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Solution

The fourth proportional to 193,156.92, 289,664.40 and 66,764.76 is: 100,122.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,156.92 : 289,664.40 = 66,764.76 : x
  2. Step 2: Convert to fraction form
    193,156.92/289,664.40 = 66,764.76/x
  3. Step 3: Cross multiply
    193,156.92x = 289,664.40 × 66,764.76
  4. Step 4: Simplify right side
    193,156.92x = 19,339,374,146.54
  5. Step 5: Solve for x
    x = 19,339,374,146.54/193,156.92
  6. Step 6: Final answer
    x = 100,122.61

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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.