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Finding the Fourth Proportional to 101,245.34, 139,717.92 and 55,926.26

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Solution

The fourth proportional to 101,245.34, 139,717.92 and 55,926.26 is: 77,177.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,245.34 : 139,717.92 = 55,926.26 : x
  2. Step 2: Convert to fraction form
    101,245.34/139,717.92 = 55,926.26/x
  3. Step 3: Cross multiply
    101,245.34x = 139,717.92 × 55,926.26
  4. Step 4: Simplify right side
    101,245.34x = 7,813,900,720.58
  5. Step 5: Solve for x
    x = 7,813,900,720.58/101,245.34
  6. Step 6: Final answer
    x = 77,177.88

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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.