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Finding the Fourth Proportional to 137,910.90, 206,866.35 and 49,167.30

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Solution

The fourth proportional to 137,910.90, 206,866.35 and 49,167.30 is: 73,750.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,910.90 : 206,866.35 = 49,167.30 : x
  2. Step 2: Convert to fraction form
    137,910.90/206,866.35 = 49,167.30/x
  3. Step 3: Cross multiply
    137,910.90x = 206,866.35 × 49,167.30
  4. Step 4: Simplify right side
    137,910.90x = 10,171,059,890.36
  5. Step 5: Solve for x
    x = 10,171,059,890.36/137,910.90
  6. Step 6: Final answer
    x = 73,750.95

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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.