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Finding the Fourth Proportional to 192,705.92, 289,141.58 and 74,460.30

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Solution

The fourth proportional to 192,705.92, 289,141.58 and 74,460.30 is: 111,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,705.92 : 289,141.58 = 74,460.30 : x
  2. Step 2: Convert to fraction form
    192,705.92/289,141.58 = 74,460.30/x
  3. Step 3: Cross multiply
    192,705.92x = 289,141.58 × 74,460.30
  4. Step 4: Simplify right side
    192,705.92x = 21,529,568,789.27
  5. Step 5: Solve for x
    x = 21,529,568,789.27/192,705.92
  6. Step 6: Final answer
    x = 111,722.40

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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.