Home / 120,921.72-166,877.61-67,207.62

Finding the Fourth Proportional to 120,921.72, 166,877.61 and 67,207.62

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Solution

The fourth proportional to 120,921.72, 166,877.61 and 67,207.62 is: 92,749.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,921.72 : 166,877.61 = 67,207.62 : x
  2. Step 2: Convert to fraction form
    120,921.72/166,877.61 = 67,207.62/x
  3. Step 3: Cross multiply
    120,921.72x = 166,877.61 × 67,207.62
  4. Step 4: Simplify right side
    120,921.72x = 11,215,446,999.39
  5. Step 5: Solve for x
    x = 11,215,446,999.39/120,921.72
  6. Step 6: Final answer
    x = 92,749.65

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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.