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Finding the Fourth Proportional to 120,485.73, 166,270.74 and 66,771.66

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Solution

The fourth proportional to 120,485.73, 166,270.74 and 66,771.66 is: 92,145.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,485.73 : 166,270.74 = 66,771.66 : x
  2. Step 2: Convert to fraction form
    120,485.73/166,270.74 = 66,771.66/x
  3. Step 3: Cross multiply
    120,485.73x = 166,270.74 × 66,771.66
  4. Step 4: Simplify right side
    120,485.73x = 11,102,173,319.23
  5. Step 5: Solve for x
    x = 11,102,173,319.23/120,485.73
  6. Step 6: Final answer
    x = 92,145.13

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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.