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Finding the Fourth Proportional to 165,471.80, 248,265.30 and 72,006.20

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Solution

The fourth proportional to 165,471.80, 248,265.30 and 72,006.20 is: 108,034.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,471.80 : 248,265.30 = 72,006.20 : x
  2. Step 2: Convert to fraction form
    165,471.80/248,265.30 = 72,006.20/x
  3. Step 3: Cross multiply
    165,471.80x = 248,265.30 × 72,006.20
  4. Step 4: Simplify right side
    165,471.80x = 17,876,640,844.86
  5. Step 5: Solve for x
    x = 17,876,640,844.86/165,471.80
  6. Step 6: Final answer
    x = 108,034.37

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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.