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Finding the Fourth Proportional to 165,910.80, 248,923.80 and 72,445.20

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Solution

The fourth proportional to 165,910.80, 248,923.80 and 72,445.20 is: 108,692.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,910.80 : 248,923.80 = 72,445.20 : x
  2. Step 2: Convert to fraction form
    165,910.80/248,923.80 = 72,445.20/x
  3. Step 3: Cross multiply
    165,910.80x = 248,923.80 × 72,445.20
  4. Step 4: Simplify right side
    165,910.80x = 18,033,334,475.76
  5. Step 5: Solve for x
    x = 18,033,334,475.76/165,910.80
  6. Step 6: Final answer
    x = 108,692.95

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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.