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Finding the Fourth Proportional to 192,039.70, 288,059.55 and 121,998.10

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Solution

The fourth proportional to 192,039.70, 288,059.55 and 121,998.10 is: 182,997.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,039.70 : 288,059.55 = 121,998.10 : x
  2. Step 2: Convert to fraction form
    192,039.70/288,059.55 = 121,998.10/x
  3. Step 3: Cross multiply
    192,039.70x = 288,059.55 × 121,998.10
  4. Step 4: Simplify right side
    192,039.70x = 35,142,717,786.86
  5. Step 5: Solve for x
    x = 35,142,717,786.86/192,039.70
  6. Step 6: Final answer
    x = 182,997.15

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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.