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Finding the Fourth Proportional to 165,469.80, 248,262.30 and 72,004.20

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Solution

The fourth proportional to 165,469.80, 248,262.30 and 72,004.20 is: 108,031.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,469.80 : 248,262.30 = 72,004.20 : x
  2. Step 2: Convert to fraction form
    165,469.80/248,262.30 = 72,004.20/x
  3. Step 3: Cross multiply
    165,469.80x = 248,262.30 × 72,004.20
  4. Step 4: Simplify right side
    165,469.80x = 17,875,928,301.66
  5. Step 5: Solve for x
    x = 17,875,928,301.66/165,469.80
  6. Step 6: Final answer
    x = 108,031.36

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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.