Home / 120,408.93-166,157.01-66,690.81

Finding the Fourth Proportional to 120,408.93, 166,157.01 and 66,690.81

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Solution

The fourth proportional to 120,408.93, 166,157.01 and 66,690.81 is: 92,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,408.93 : 166,157.01 = 66,690.81 : x
  2. Step 2: Convert to fraction form
    120,408.93/166,157.01 = 66,690.81/x
  3. Step 3: Cross multiply
    120,408.93x = 166,157.01 × 66,690.81
  4. Step 4: Simplify right side
    120,408.93x = 11,081,145,584.08
  5. Step 5: Solve for x
    x = 11,081,145,584.08/120,408.93
  6. Step 6: Final answer
    x = 92,029.27

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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.