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Finding the Fourth Proportional to 192,676.10, 289,064.55 and 74,351.30

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Solution

The fourth proportional to 192,676.10, 289,064.55 and 74,351.30 is: 111,546.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,676.10 : 289,064.55 = 74,351.30 : x
  2. Step 2: Convert to fraction form
    192,676.10/289,064.55 = 74,351.30/x
  3. Step 3: Cross multiply
    192,676.10x = 289,064.55 × 74,351.30
  4. Step 4: Simplify right side
    192,676.10x = 21,492,325,076.42
  5. Step 5: Solve for x
    x = 21,492,325,076.42/192,676.10
  6. Step 6: Final answer
    x = 111,546.40

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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.