Home / 102,872.20-154,308.30-36,311.80

Finding the Fourth Proportional to 102,872.20, 154,308.30 and 36,311.80

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Solution

The fourth proportional to 102,872.20, 154,308.30 and 36,311.80 is: 54,467.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,872.20 : 154,308.30 = 36,311.80 : x
  2. Step 2: Convert to fraction form
    102,872.20/154,308.30 = 36,311.80/x
  3. Step 3: Cross multiply
    102,872.20x = 154,308.30 × 36,311.80
  4. Step 4: Simplify right side
    102,872.20x = 5,603,212,127.94
  5. Step 5: Solve for x
    x = 5,603,212,127.94/102,872.20
  6. Step 6: Final answer
    x = 54,467.70

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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.