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Finding the Fourth Proportional to 101,245.22, 139,717.73 and 55,926.12

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Solution

The fourth proportional to 101,245.22, 139,717.73 and 55,926.12 is: 77,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.22 : 139,717.73 = 55,926.12 : x
  2. Step 2: Convert to fraction form
    101,245.22/139,717.73 = 55,926.12/x
  3. Step 3: Cross multiply
    101,245.22x = 139,717.73 × 55,926.12
  4. Step 4: Simplify right side
    101,245.22x = 7,813,870,673.92
  5. Step 5: Solve for x
    x = 7,813,870,673.92/101,245.22
  6. Step 6: Final answer
    x = 77,177.68

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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.