Home / 120,408.96-166,157.04-66,690.78

Finding the Fourth Proportional to 120,408.96, 166,157.04 and 66,690.78

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Solution

The fourth proportional to 120,408.96, 166,157.04 and 66,690.78 is: 92,029.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,408.96 : 166,157.04 = 66,690.78 : x
  2. Step 2: Convert to fraction form
    120,408.96/166,157.04 = 66,690.78/x
  3. Step 3: Cross multiply
    120,408.96x = 166,157.04 × 66,690.78
  4. Step 4: Simplify right side
    120,408.96x = 11,081,142,600.09
  5. Step 5: Solve for x
    x = 11,081,142,600.09/120,408.96
  6. Step 6: Final answer
    x = 92,029.22

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1.5x scale

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.