Home / 120,840.12-166,757.04-67,122.72

Finding the Fourth Proportional to 120,840.12, 166,757.04 and 67,122.72

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Solution

The fourth proportional to 120,840.12, 166,757.04 and 67,122.72 is: 92,628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,840.12 : 166,757.04 = 67,122.72 : x
  2. Step 2: Convert to fraction form
    120,840.12/166,757.04 = 67,122.72/x
  3. Step 3: Cross multiply
    120,840.12x = 166,757.04 × 67,122.72
  4. Step 4: Simplify right side
    120,840.12x = 11,193,186,103.95
  5. Step 5: Solve for x
    x = 11,193,186,103.95/120,840.12
  6. Step 6: Final answer
    x = 92,628.06

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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.