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Finding the Fourth Proportional to 192,812.94, 289,108.44 and 74,468.70

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Solution

The fourth proportional to 192,812.94, 289,108.44 and 74,468.70 is: 111,660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,812.94 : 289,108.44 = 74,468.70 : x
  2. Step 2: Convert to fraction form
    192,812.94/289,108.44 = 74,468.70/x
  3. Step 3: Cross multiply
    192,812.94x = 289,108.44 × 74,468.70
  4. Step 4: Simplify right side
    192,812.94x = 21,529,529,685.83
  5. Step 5: Solve for x
    x = 21,529,529,685.83/192,812.94
  6. Step 6: Final answer
    x = 111,660.19

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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.