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Finding the Fourth Proportional to 120,819.36, 166,728.60 and 67,102.32

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Solution

The fourth proportional to 120,819.36, 166,728.60 and 67,102.32 is: 92,600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,819.36 : 166,728.60 = 67,102.32 : x
  2. Step 2: Convert to fraction form
    120,819.36/166,728.60 = 67,102.32/x
  3. Step 3: Cross multiply
    120,819.36x = 166,728.60 × 67,102.32
  4. Step 4: Simplify right side
    120,819.36x = 11,187,875,870.35
  5. Step 5: Solve for x
    x = 11,187,875,870.35/120,819.36
  6. Step 6: Final answer
    x = 92,600.03

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