Home / 193,489.38-289,938.15-81,108.32

Finding the Fourth Proportional to 193,489.38, 289,938.15 and 81,108.32

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Solution

The fourth proportional to 193,489.38, 289,938.15 and 81,108.32 is: 121,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,489.38 : 289,938.15 = 81,108.32 : x
  2. Step 2: Convert to fraction form
    193,489.38/289,938.15 = 81,108.32/x
  3. Step 3: Cross multiply
    193,489.38x = 289,938.15 × 81,108.32
  4. Step 4: Simplify right side
    193,489.38x = 23,516,394,800.72
  5. Step 5: Solve for x
    x = 23,516,394,800.72/193,489.38
  6. Step 6: Final answer
    x = 121,538.43

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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.