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Finding the Fourth Proportional to 137,841.90, 206,768.12 and 43,080.81

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Solution

The fourth proportional to 137,841.90, 206,768.12 and 43,080.81 is: 64,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,841.90 : 206,768.12 = 43,080.81 : x
  2. Step 2: Convert to fraction form
    137,841.90/206,768.12 = 43,080.81/x
  3. Step 3: Cross multiply
    137,841.90x = 206,768.12 × 43,080.81
  4. Step 4: Simplify right side
    137,841.90x = 8,907,737,876.37
  5. Step 5: Solve for x
    x = 8,907,737,876.37/137,841.90
  6. Step 6: Final answer
    x = 64,622.86

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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.