Home / 120,645.05-166,471.40-68,961.38

Finding the Fourth Proportional to 120,645.05, 166,471.40 and 68,961.38

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Solution

The fourth proportional to 120,645.05, 166,471.40 and 68,961.38 is: 95,155.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,645.05 : 166,471.40 = 68,961.38 : x
  2. Step 2: Convert to fraction form
    120,645.05/166,471.40 = 68,961.38/x
  3. Step 3: Cross multiply
    120,645.05x = 166,471.40 × 68,961.38
  4. Step 4: Simplify right side
    120,645.05x = 11,480,096,814.58
  5. Step 5: Solve for x
    x = 11,480,096,814.58/120,645.05
  6. Step 6: Final answer
    x = 95,155.97

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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.