Home / 120,626.87-166,472.15-66,917.79

Finding the Fourth Proportional to 120,626.87, 166,472.15 and 66,917.79

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Solution

The fourth proportional to 120,626.87, 166,472.15 and 66,917.79 is: 92,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,626.87 : 166,472.15 = 66,917.79 : x
  2. Step 2: Convert to fraction form
    120,626.87/166,472.15 = 66,917.79/x
  3. Step 3: Cross multiply
    120,626.87x = 166,472.15 × 66,917.79
  4. Step 4: Simplify right side
    120,626.87x = 11,139,948,039.96
  5. Step 5: Solve for x
    x = 11,139,948,039.96/120,626.87
  6. Step 6: Final answer
    x = 92,350.47

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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.