Home / 192,221.20-288,072.60-128,861.20

Finding the Fourth Proportional to 192,221.20, 288,072.60 and 128,861.20

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Solution

The fourth proportional to 192,221.20, 288,072.60 and 128,861.20 is: 193,118.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,221.20 : 288,072.60 = 128,861.20 : x
  2. Step 2: Convert to fraction form
    192,221.20/288,072.60 = 128,861.20/x
  3. Step 3: Cross multiply
    192,221.20x = 288,072.60 × 128,861.20
  4. Step 4: Simplify right side
    192,221.20x = 37,121,380,923.12
  5. Step 5: Solve for x
    x = 37,121,380,923.12/192,221.20
  6. Step 6: Final answer
    x = 193,118.04

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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.