Home / 120,638.72-166,481.24-66,931.92

Finding the Fourth Proportional to 120,638.72, 166,481.24 and 66,931.92

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Solution

The fourth proportional to 120,638.72, 166,481.24 and 66,931.92 is: 92,365.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,638.72 : 166,481.24 = 66,931.92 : x
  2. Step 2: Convert to fraction form
    120,638.72/166,481.24 = 66,931.92/x
  3. Step 3: Cross multiply
    120,638.72x = 166,481.24 × 66,931.92
  4. Step 4: Simplify right side
    120,638.72x = 11,142,909,037.18
  5. Step 5: Solve for x
    x = 11,142,909,037.18/120,638.72
  6. Step 6: Final answer
    x = 92,365.94

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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.