Home / 121,311.93-167,408.22-66,121.73

Finding the Fourth Proportional to 121,311.93, 167,408.22 and 66,121.73

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Solution

The fourth proportional to 121,311.93, 167,408.22 and 66,121.73 is: 91,246.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,311.93 : 167,408.22 = 66,121.73 : x
  2. Step 2: Convert to fraction form
    121,311.93/167,408.22 = 66,121.73/x
  3. Step 3: Cross multiply
    121,311.93x = 167,408.22 × 66,121.73
  4. Step 4: Simplify right side
    121,311.93x = 11,069,320,475.49
  5. Step 5: Solve for x
    x = 11,069,320,475.49/121,311.93
  6. Step 6: Final answer
    x = 91,246.76

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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.