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Finding the Fourth Proportional to 138,903.26, 208,354.88 and 33,721.52

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Solution

The fourth proportional to 138,903.26, 208,354.88 and 33,721.52 is: 50,582.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,903.26 : 208,354.88 = 33,721.52 : x
  2. Step 2: Convert to fraction form
    138,903.26/208,354.88 = 33,721.52/x
  3. Step 3: Cross multiply
    138,903.26x = 208,354.88 × 33,721.52
  4. Step 4: Simplify right side
    138,903.26x = 7,026,042,295.55
  5. Step 5: Solve for x
    x = 7,026,042,295.55/138,903.26
  6. Step 6: Final answer
    x = 50,582.27

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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.