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Finding the Fourth Proportional to 192,032.20, 288,048.30 and 81,224.20

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Solution

The fourth proportional to 192,032.20, 288,048.30 and 81,224.20 is: 121,836.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,032.20 : 288,048.30 = 81,224.20 : x
  2. Step 2: Convert to fraction form
    192,032.20/288,048.30 = 81,224.20/x
  3. Step 3: Cross multiply
    192,032.20x = 288,048.30 × 81,224.20
  4. Step 4: Simplify right side
    192,032.20x = 23,396,492,728.86
  5. Step 5: Solve for x
    x = 23,396,492,728.86/192,032.20
  6. Step 6: Final answer
    x = 121,836.30

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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.