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Finding the Fourth Proportional to 139,192.96, 208,789.44 and 40,696.96

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Solution

The fourth proportional to 139,192.96, 208,789.44 and 40,696.96 is: 61,045.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,192.96 : 208,789.44 = 40,696.96 : x
  2. Step 2: Convert to fraction form
    139,192.96/208,789.44 = 40,696.96/x
  3. Step 3: Cross multiply
    139,192.96x = 208,789.44 × 40,696.96
  4. Step 4: Simplify right side
    139,192.96x = 8,497,095,488.10
  5. Step 5: Solve for x
    x = 8,497,095,488.10/139,192.96
  6. Step 6: Final answer
    x = 61,045.44

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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.