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Finding the Fourth Proportional to 192,771.60, 289,200.60 and 74,432.40

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Solution

The fourth proportional to 192,771.60, 289,200.60 and 74,432.40 is: 111,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,771.60 : 289,200.60 = 74,432.40 : x
  2. Step 2: Convert to fraction form
    192,771.60/289,200.60 = 74,432.40/x
  3. Step 3: Cross multiply
    192,771.60x = 289,200.60 × 74,432.40
  4. Step 4: Simplify right side
    192,771.60x = 21,525,894,739.44
  5. Step 5: Solve for x
    x = 21,525,894,739.44/192,771.60
  6. Step 6: Final answer
    x = 111,665.28

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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.