Home / 149,447.20-206,234.32-81,464.80

Finding the Fourth Proportional to 149,447.20, 206,234.32 and 81,464.80

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Solution

The fourth proportional to 149,447.20, 206,234.32 and 81,464.80 is: 112,419.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,447.20 : 206,234.32 = 81,464.80 : x
  2. Step 2: Convert to fraction form
    149,447.20/206,234.32 = 81,464.80/x
  3. Step 3: Cross multiply
    149,447.20x = 206,234.32 × 81,464.80
  4. Step 4: Simplify right side
    149,447.20x = 16,800,837,631.94
  5. Step 5: Solve for x
    x = 16,800,837,631.94/149,447.20
  6. Step 6: Final answer
    x = 112,419.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.