Home / 165,583.20-248,204.70-81,213.60

Finding the Fourth Proportional to 165,583.20, 248,204.70 and 81,213.60

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Solution

The fourth proportional to 165,583.20, 248,204.70 and 81,213.60 is: 121,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,583.20 : 248,204.70 = 81,213.60 : x
  2. Step 2: Convert to fraction form
    165,583.20/248,204.70 = 81,213.60/x
  3. Step 3: Cross multiply
    165,583.20x = 248,204.70 × 81,213.60
  4. Step 4: Simplify right side
    165,583.20x = 20,157,597,223.92
  5. Step 5: Solve for x
    x = 20,157,597,223.92/165,583.20
  6. Step 6: Final answer
    x = 121,736.97

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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.