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Finding the Fourth Proportional to 192,816.30, 289,138.05 and 74,448.30

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Solution

The fourth proportional to 192,816.30, 289,138.05 and 74,448.30 is: 111,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,816.30 : 289,138.05 = 74,448.30 : x
  2. Step 2: Convert to fraction form
    192,816.30/289,138.05 = 74,448.30/x
  3. Step 3: Cross multiply
    192,816.30x = 289,138.05 × 74,448.30
  4. Step 4: Simplify right side
    192,816.30x = 21,525,836,287.82
  5. Step 5: Solve for x
    x = 21,525,836,287.82/192,816.30
  6. Step 6: Final answer
    x = 111,639.09

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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.