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Finding the Fourth Proportional to 192,129.40, 288,194.10 and 133,080.40

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Solution

The fourth proportional to 192,129.40, 288,194.10 and 133,080.40 is: 199,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,129.40 : 288,194.10 = 133,080.40 : x
  2. Step 2: Convert to fraction form
    192,129.40/288,194.10 = 133,080.40/x
  3. Step 3: Cross multiply
    192,129.40x = 288,194.10 × 133,080.40
  4. Step 4: Simplify right side
    192,129.40x = 38,352,986,105.64
  5. Step 5: Solve for x
    x = 38,352,986,105.64/192,129.40
  6. Step 6: Final answer
    x = 199,620.60

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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.