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Finding the Fourth Proportional to 101,194.80, 139,645.02 and 55,871.79

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Solution

The fourth proportional to 101,194.80, 139,645.02 and 55,871.79 is: 77,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,194.80 : 139,645.02 = 55,871.79 : x
  2. Step 2: Convert to fraction form
    101,194.80/139,645.02 = 55,871.79/x
  3. Step 3: Cross multiply
    101,194.80x = 139,645.02 × 55,871.79
  4. Step 4: Simplify right side
    101,194.80x = 7,802,217,231.99
  5. Step 5: Solve for x
    x = 7,802,217,231.99/101,194.80
  6. Step 6: Final answer
    x = 77,100.97

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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.