Home / 193,039.14-289,459.97-80,688.71

Finding the Fourth Proportional to 193,039.14, 289,459.97 and 80,688.71

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Solution

The fourth proportional to 193,039.14, 289,459.97 and 80,688.71 is: 120,991.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,039.14 : 289,459.97 = 80,688.71 : x
  2. Step 2: Convert to fraction form
    193,039.14/289,459.97 = 80,688.71/x
  3. Step 3: Cross multiply
    193,039.14x = 289,459.97 × 80,688.71
  4. Step 4: Simplify right side
    193,039.14x = 23,356,149,725.20
  5. Step 5: Solve for x
    x = 23,356,149,725.20/193,039.14
  6. Step 6: Final answer
    x = 120,991.78

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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.