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Finding the Fourth Proportional to 101,266.11, 139,744.53 and 55,936.79

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Solution

The fourth proportional to 101,266.11, 139,744.53 and 55,936.79 is: 77,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,266.11 : 139,744.53 = 55,936.79 : x
  2. Step 2: Convert to fraction form
    101,266.11/139,744.53 = 55,936.79/x
  3. Step 3: Cross multiply
    101,266.11x = 139,744.53 × 55,936.79
  4. Step 4: Simplify right side
    101,266.11x = 7,816,859,729.54
  5. Step 5: Solve for x
    x = 7,816,859,729.54/101,266.11
  6. Step 6: Final answer
    x = 77,191.27

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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.