Home / 120,715.56-166,584.36-66,999

Finding the Fourth Proportional to 120,715.56, 166,584.36 and 66,999

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Solution

The fourth proportional to 120,715.56, 166,584.36 and 66,999 is: 92,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,715.56 : 166,584.36 = 66,999 : x
  2. Step 2: Convert to fraction form
    120,715.56/166,584.36 = 66,999/x
  3. Step 3: Cross multiply
    120,715.56x = 166,584.36 × 66,999
  4. Step 4: Simplify right side
    120,715.56x = 11,160,985,535.64
  5. Step 5: Solve for x
    x = 11,160,985,535.64/120,715.56
  6. Step 6: Final answer
    x = 92,456.89

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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.