Home / 120,505.03-166,294.36-66,789.56

Finding the Fourth Proportional to 120,505.03, 166,294.36 and 66,789.56

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Solution

The fourth proportional to 120,505.03, 166,294.36 and 66,789.56 is: 92,168.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,505.03 : 166,294.36 = 66,789.56 : x
  2. Step 2: Convert to fraction form
    120,505.03/166,294.36 = 66,789.56/x
  3. Step 3: Cross multiply
    120,505.03x = 166,294.36 × 66,789.56
  4. Step 4: Simplify right side
    120,505.03x = 11,106,727,134.88
  5. Step 5: Solve for x
    x = 11,106,727,134.88/120,505.03
  6. Step 6: Final answer
    x = 92,168.16

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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.