Home / 165,940.20-248,861.70-77,172.30

Finding the Fourth Proportional to 165,940.20, 248,861.70 and 77,172.30

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Solution

The fourth proportional to 165,940.20, 248,861.70 and 77,172.30 is: 115,735.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,940.20 : 248,861.70 = 77,172.30 : x
  2. Step 2: Convert to fraction form
    165,940.20/248,861.70 = 77,172.30/x
  3. Step 3: Cross multiply
    165,940.20x = 248,861.70 × 77,172.30
  4. Step 4: Simplify right side
    165,940.20x = 19,205,229,770.91
  5. Step 5: Solve for x
    x = 19,205,229,770.91/165,940.20
  6. Step 6: Final answer
    x = 115,735.85

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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.