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Finding the Fourth Proportional to 192,608.80, 288,913.20 and 87,632.80

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Solution

The fourth proportional to 192,608.80, 288,913.20 and 87,632.80 is: 131,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,608.80 : 288,913.20 = 87,632.80 : x
  2. Step 2: Convert to fraction form
    192,608.80/288,913.20 = 87,632.80/x
  3. Step 3: Cross multiply
    192,608.80x = 288,913.20 × 87,632.80
  4. Step 4: Simplify right side
    192,608.80x = 25,318,272,672.96
  5. Step 5: Solve for x
    x = 25,318,272,672.96/192,608.80
  6. Step 6: Final answer
    x = 131,449.20

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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.