Home / 149,449.50-206,236.18-81,467.80

Finding the Fourth Proportional to 149,449.50, 206,236.18 and 81,467.80

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Solution

The fourth proportional to 149,449.50, 206,236.18 and 81,467.80 is: 112,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,449.50 : 206,236.18 = 81,467.80 : x
  2. Step 2: Convert to fraction form
    149,449.50/206,236.18 = 81,467.80/x
  3. Step 3: Cross multiply
    149,449.50x = 206,236.18 × 81,467.80
  4. Step 4: Simplify right side
    149,449.50x = 16,801,607,865.00
  5. Step 5: Solve for x
    x = 16,801,607,865.00/149,449.50
  6. Step 6: Final answer
    x = 112,423.31

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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.