Home / 120,561.16-180,850.42-31,813.64

Finding the Fourth Proportional to 120,561.16, 180,850.42 and 31,813.64

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Solution

The fourth proportional to 120,561.16, 180,850.42 and 31,813.64 is: 47,722.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,561.16 : 180,850.42 = 31,813.64 : x
  2. Step 2: Convert to fraction form
    120,561.16/180,850.42 = 31,813.64/x
  3. Step 3: Cross multiply
    120,561.16x = 180,850.42 × 31,813.64
  4. Step 4: Simplify right side
    120,561.16x = 5,753,510,155.73
  5. Step 5: Solve for x
    x = 5,753,510,155.73/120,561.16
  6. Step 6: Final answer
    x = 47,722.75

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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.