Home / 120,131.10-180,286.41-45,325.02

Finding the Fourth Proportional to 120,131.10, 180,286.41 and 45,325.02

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Solution

The fourth proportional to 120,131.10, 180,286.41 and 45,325.02 is: 68,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,131.10 : 180,286.41 = 45,325.02 : x
  2. Step 2: Convert to fraction form
    120,131.10/180,286.41 = 45,325.02/x
  3. Step 3: Cross multiply
    120,131.10x = 180,286.41 × 45,325.02
  4. Step 4: Simplify right side
    120,131.10x = 8,171,485,138.98
  5. Step 5: Solve for x
    x = 8,171,485,138.98/120,131.10
  6. Step 6: Final answer
    x = 68,021.40

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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.