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Finding the Fourth Proportional to 139,044.46, 208,487.46 and 54,758.98

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Solution

The fourth proportional to 139,044.46, 208,487.46 and 54,758.98 is: 82,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,044.46 : 208,487.46 = 54,758.98 : x
  2. Step 2: Convert to fraction form
    139,044.46/208,487.46 = 54,758.98/x
  3. Step 3: Cross multiply
    139,044.46x = 208,487.46 × 54,758.98
  4. Step 4: Simplify right side
    139,044.46x = 11,416,560,652.39
  5. Step 5: Solve for x
    x = 11,416,560,652.39/139,044.46
  6. Step 6: Final answer
    x = 82,107.27

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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.