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Finding the Fourth Proportional to 192,000.20, 288,000.30 and 121,958.60

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Solution

The fourth proportional to 192,000.20, 288,000.30 and 121,958.60 is: 182,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,000.20 : 288,000.30 = 121,958.60 : x
  2. Step 2: Convert to fraction form
    192,000.20/288,000.30 = 121,958.60/x
  3. Step 3: Cross multiply
    192,000.20x = 288,000.30 × 121,958.60
  4. Step 4: Simplify right side
    192,000.20x = 35,124,113,387.58
  5. Step 5: Solve for x
    x = 35,124,113,387.58/192,000.20
  6. Step 6: Final answer
    x = 182,937.90

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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.