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Finding the Fourth Proportional to 192,903.28, 289,354.96 and 80,522.20

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Solution

The fourth proportional to 192,903.28, 289,354.96 and 80,522.20 is: 120,783.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,903.28 : 289,354.96 = 80,522.20 : x
  2. Step 2: Convert to fraction form
    192,903.28/289,354.96 = 80,522.20/x
  3. Step 3: Cross multiply
    192,903.28x = 289,354.96 × 80,522.20
  4. Step 4: Simplify right side
    192,903.28x = 23,299,497,960.11
  5. Step 5: Solve for x
    x = 23,299,497,960.11/192,903.28
  6. Step 6: Final answer
    x = 120,783.32

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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.