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Finding the Fourth Proportional to 192,086.20, 288,129.30 and 113,289.40

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Solution

The fourth proportional to 192,086.20, 288,129.30 and 113,289.40 is: 169,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,086.20 : 288,129.30 = 113,289.40 : x
  2. Step 2: Convert to fraction form
    192,086.20/288,129.30 = 113,289.40/x
  3. Step 3: Cross multiply
    192,086.20x = 288,129.30 × 113,289.40
  4. Step 4: Simplify right side
    192,086.20x = 32,641,995,519.42
  5. Step 5: Solve for x
    x = 32,641,995,519.42/192,086.20
  6. Step 6: Final answer
    x = 169,934.10

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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.