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Finding the Fourth Proportional to 192,873.84, 289,356.93 and 80,491.56

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Solution

The fourth proportional to 192,873.84, 289,356.93 and 80,491.56 is: 120,756.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,873.84 : 289,356.93 = 80,491.56 : x
  2. Step 2: Convert to fraction form
    192,873.84/289,356.93 = 80,491.56/x
  3. Step 3: Cross multiply
    192,873.84x = 289,356.93 × 80,491.56
  4. Step 4: Simplify right side
    192,873.84x = 23,290,790,692.51
  5. Step 5: Solve for x
    x = 23,290,790,692.51/192,873.84
  6. Step 6: Final answer
    x = 120,756.61

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1.5x scale

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.