Home / 120,623.27-180,993.85-85,311.50

Finding the Fourth Proportional to 120,623.27, 180,993.85 and 85,311.50

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Solution

The fourth proportional to 120,623.27, 180,993.85 and 85,311.50 is: 128,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.27 : 180,993.85 = 85,311.50 : x
  2. Step 2: Convert to fraction form
    120,623.27/180,993.85 = 85,311.50/x
  3. Step 3: Cross multiply
    120,623.27x = 180,993.85 × 85,311.50
  4. Step 4: Simplify right side
    120,623.27x = 15,440,855,716.03
  5. Step 5: Solve for x
    x = 15,440,855,716.03/120,623.27
  6. Step 6: Final answer
    x = 128,008.94

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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.