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Finding the Fourth Proportional to 109,229.20, 163,843.80 and 74,237.20

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Solution

The fourth proportional to 109,229.20, 163,843.80 and 74,237.20 is: 111,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,229.20 : 163,843.80 = 74,237.20 : x
  2. Step 2: Convert to fraction form
    109,229.20/163,843.80 = 74,237.20/x
  3. Step 3: Cross multiply
    109,229.20x = 163,843.80 × 74,237.20
  4. Step 4: Simplify right side
    109,229.20x = 12,163,304,949.36
  5. Step 5: Solve for x
    x = 12,163,304,949.36/109,229.20
  6. Step 6: Final answer
    x = 111,355.80

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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.