Home / 110,939.20-166,311.60-66,518.80

Finding the Fourth Proportional to 110,939.20, 166,311.60 and 66,518.80

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Solution

The fourth proportional to 110,939.20, 166,311.60 and 66,518.80 is: 99,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,939.20 : 166,311.60 = 66,518.80 : x
  2. Step 2: Convert to fraction form
    110,939.20/166,311.60 = 66,518.80/x
  3. Step 3: Cross multiply
    110,939.20x = 166,311.60 × 66,518.80
  4. Step 4: Simplify right side
    110,939.20x = 11,062,848,058.08
  5. Step 5: Solve for x
    x = 11,062,848,058.08/110,939.20
  6. Step 6: Final answer
    x = 99,719.92

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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.