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Finding the Fourth Proportional to 122,863.20, 183,949.20 and 110,421.60

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Solution

The fourth proportional to 122,863.20, 183,949.20 and 110,421.60 is: 165,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,863.20 : 183,949.20 = 110,421.60 : x
  2. Step 2: Convert to fraction form
    122,863.20/183,949.20 = 110,421.60/x
  3. Step 3: Cross multiply
    122,863.20x = 183,949.20 × 110,421.60
  4. Step 4: Simplify right side
    122,863.20x = 20,311,964,982.72
  5. Step 5: Solve for x
    x = 20,311,964,982.72/122,863.20
  6. Step 6: Final answer
    x = 165,321.80

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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.