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Finding the Fourth Proportional to 100,442.45, 150,522.84 and 72,229.75

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Solution

The fourth proportional to 100,442.45, 150,522.84 and 72,229.75 is: 108,243.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,442.45 : 150,522.84 = 72,229.75 : x
  2. Step 2: Convert to fraction form
    100,442.45/150,522.84 = 72,229.75/x
  3. Step 3: Cross multiply
    100,442.45x = 150,522.84 × 72,229.75
  4. Step 4: Simplify right side
    100,442.45x = 10,872,226,726.18
  5. Step 5: Solve for x
    x = 10,872,226,726.18/100,442.45
  6. Step 6: Final answer
    x = 108,243.34

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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.