Home / 120,408.12-166,163.40-66,695.40

Finding the Fourth Proportional to 120,408.12, 166,163.40 and 66,695.40

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Solution

The fourth proportional to 120,408.12, 166,163.40 and 66,695.40 is: 92,039.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,408.12 : 166,163.40 = 66,695.40 : x
  2. Step 2: Convert to fraction form
    120,408.12/166,163.40 = 66,695.40/x
  3. Step 3: Cross multiply
    120,408.12x = 166,163.40 × 66,695.40
  4. Step 4: Simplify right side
    120,408.12x = 11,082,334,428.36
  5. Step 5: Solve for x
    x = 11,082,334,428.36/120,408.12
  6. Step 6: Final answer
    x = 92,039.76

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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.