Home / 192,000.20-288,000.30-129,331.40

Finding the Fourth Proportional to 192,000.20, 288,000.30 and 129,331.40

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Solution

The fourth proportional to 192,000.20, 288,000.30 and 129,331.40 is: 193,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,000.20 : 288,000.30 = 129,331.40 : x
  2. Step 2: Convert to fraction form
    192,000.20/288,000.30 = 129,331.40/x
  3. Step 3: Cross multiply
    192,000.20x = 288,000.30 × 129,331.40
  4. Step 4: Simplify right side
    192,000.20x = 37,247,481,999.42
  5. Step 5: Solve for x
    x = 37,247,481,999.42/192,000.20
  6. Step 6: Final answer
    x = 193,997.10

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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.