Home / 120,216.80-180,325.20-67,072.70

Finding the Fourth Proportional to 120,216.80, 180,325.20 and 67,072.70

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Solution

The fourth proportional to 120,216.80, 180,325.20 and 67,072.70 is: 100,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,216.80 : 180,325.20 = 67,072.70 : x
  2. Step 2: Convert to fraction form
    120,216.80/180,325.20 = 67,072.70/x
  3. Step 3: Cross multiply
    120,216.80x = 180,325.20 × 67,072.70
  4. Step 4: Simplify right side
    120,216.80x = 12,094,898,042.04
  5. Step 5: Solve for x
    x = 12,094,898,042.04/120,216.80
  6. Step 6: Final answer
    x = 100,609.05

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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.