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Finding the Fourth Proportional to 120,385.44, 166,134.60 and 66,669.12

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Solution

The fourth proportional to 120,385.44, 166,134.60 and 66,669.12 is: 92,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,385.44 : 166,134.60 = 66,669.12 : x
  2. Step 2: Convert to fraction form
    120,385.44/166,134.60 = 66,669.12/x
  3. Step 3: Cross multiply
    120,385.44x = 166,134.60 × 66,669.12
  4. Step 4: Simplify right side
    120,385.44x = 11,076,047,583.55
  5. Step 5: Solve for x
    x = 11,076,047,583.55/120,385.44
  6. Step 6: Final answer
    x = 92,004.88

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1.5x scale

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.