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Finding the Fourth Proportional to 68,124.90, 102,175.20 and 43,120.20

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Solution

The fourth proportional to 68,124.90, 102,175.20 and 43,120.20 is: 64,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,124.90 : 102,175.20 = 43,120.20 : x
  2. Step 2: Convert to fraction form
    68,124.90/102,175.20 = 43,120.20/x
  3. Step 3: Cross multiply
    68,124.90x = 102,175.20 × 43,120.20
  4. Step 4: Simplify right side
    68,124.90x = 4,405,815,059.04
  5. Step 5: Solve for x
    x = 4,405,815,059.04/68,124.90
  6. Step 6: Final answer
    x = 64,672.61

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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.