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Finding the Fourth Proportional to 120,709.40, 166,579.04 and 66,994.44

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Solution

The fourth proportional to 120,709.40, 166,579.04 and 66,994.44 is: 92,452.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,709.40 : 166,579.04 = 66,994.44 : x
  2. Step 2: Convert to fraction form
    120,709.40/166,579.04 = 66,994.44/x
  3. Step 3: Cross multiply
    120,709.40x = 166,579.04 × 66,994.44
  4. Step 4: Simplify right side
    120,709.40x = 11,159,869,500.54
  5. Step 5: Solve for x
    x = 11,159,869,500.54/120,709.40
  6. Step 6: Final answer
    x = 92,452.36

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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.