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Finding the Fourth Proportional to 192,012.85, 288,019.42 and 65,654.05

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Solution

The fourth proportional to 192,012.85, 288,019.42 and 65,654.05 is: 98,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,012.85 : 288,019.42 = 65,654.05 : x
  2. Step 2: Convert to fraction form
    192,012.85/288,019.42 = 65,654.05/x
  3. Step 3: Cross multiply
    192,012.85x = 288,019.42 × 65,654.05
  4. Step 4: Simplify right side
    192,012.85x = 18,909,640,432.10
  5. Step 5: Solve for x
    x = 18,909,640,432.10/192,012.85
  6. Step 6: Final answer
    x = 98,481.12

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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.