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Finding the Fourth Proportional to 137,367.90, 206,013.78 and 48,609.72

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Solution

The fourth proportional to 137,367.90, 206,013.78 and 48,609.72 is: 72,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,367.90 : 206,013.78 = 48,609.72 : x
  2. Step 2: Convert to fraction form
    137,367.90/206,013.78 = 48,609.72/x
  3. Step 3: Cross multiply
    137,367.90x = 206,013.78 × 48,609.72
  4. Step 4: Simplify right side
    137,367.90x = 10,014,272,161.94
  5. Step 5: Solve for x
    x = 10,014,272,161.94/137,367.90
  6. Step 6: Final answer
    x = 72,901.11

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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.