Home / 120,682.20-180,867.12-67,372.80

Finding the Fourth Proportional to 120,682.20, 180,867.12 and 67,372.80

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Solution

The fourth proportional to 120,682.20, 180,867.12 and 67,372.80 is: 100,972.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,682.20 : 180,867.12 = 67,372.80 : x
  2. Step 2: Convert to fraction form
    120,682.20/180,867.12 = 67,372.80/x
  3. Step 3: Cross multiply
    120,682.20x = 180,867.12 × 67,372.80
  4. Step 4: Simplify right side
    120,682.20x = 12,185,524,302.34
  5. Step 5: Solve for x
    x = 12,185,524,302.34/120,682.20
  6. Step 6: Final answer
    x = 100,972.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.