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Finding the Fourth Proportional to 101,231.27, 139,696.90 and 55,289.39

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Solution

The fourth proportional to 101,231.27, 139,696.90 and 55,289.39 is: 76,298.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,231.27 : 139,696.90 = 55,289.39 : x
  2. Step 2: Convert to fraction form
    101,231.27/139,696.90 = 55,289.39/x
  3. Step 3: Cross multiply
    101,231.27x = 139,696.90 × 55,289.39
  4. Step 4: Simplify right side
    101,231.27x = 7,723,755,860.19
  5. Step 5: Solve for x
    x = 7,723,755,860.19/101,231.27
  6. Step 6: Final answer
    x = 76,298.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.