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Finding the Fourth Proportional to 139,244.96, 208,604.40 and 107,926.88

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Solution

The fourth proportional to 139,244.96, 208,604.40 and 107,926.88 is: 161,686.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,244.96 : 208,604.40 = 107,926.88 : x
  2. Step 2: Convert to fraction form
    139,244.96/208,604.40 = 107,926.88/x
  3. Step 3: Cross multiply
    139,244.96x = 208,604.40 × 107,926.88
  4. Step 4: Simplify right side
    139,244.96x = 22,514,022,046.27
  5. Step 5: Solve for x
    x = 22,514,022,046.27/139,244.96
  6. Step 6: Final answer
    x = 161,686.44

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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.