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Finding the Fourth Proportional to 122,692.95, 169,313.36 and 80,250.57

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Solution

The fourth proportional to 122,692.95, 169,313.36 and 80,250.57 is: 110,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,692.95 : 169,313.36 = 80,250.57 : x
  2. Step 2: Convert to fraction form
    122,692.95/169,313.36 = 80,250.57/x
  3. Step 3: Cross multiply
    122,692.95x = 169,313.36 × 80,250.57
  4. Step 4: Simplify right side
    122,692.95x = 13,587,493,247.36
  5. Step 5: Solve for x
    x = 13,587,493,247.36/122,692.95
  6. Step 6: Final answer
    x = 110,743.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.