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Finding the Fourth Proportional to 102,871.20, 154,306.80 and 36,310.80

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Solution

The fourth proportional to 102,871.20, 154,306.80 and 36,310.80 is: 54,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,871.20 : 154,306.80 = 36,310.80 : x
  2. Step 2: Convert to fraction form
    102,871.20/154,306.80 = 36,310.80/x
  3. Step 3: Cross multiply
    102,871.20x = 154,306.80 × 36,310.80
  4. Step 4: Simplify right side
    102,871.20x = 5,603,003,353.44
  5. Step 5: Solve for x
    x = 5,603,003,353.44/102,871.20
  6. Step 6: Final answer
    x = 54,466.20

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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.