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Finding the Fourth Proportional to 101,071.48, 139,491.56 and 84,046.44

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Solution

The fourth proportional to 101,071.48, 139,491.56 and 84,046.44 is: 115,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,071.48 : 139,491.56 = 84,046.44 : x
  2. Step 2: Convert to fraction form
    101,071.48/139,491.56 = 84,046.44/x
  3. Step 3: Cross multiply
    101,071.48x = 139,491.56 × 84,046.44
  4. Step 4: Simplify right side
    101,071.48x = 11,723,769,028.05
  5. Step 5: Solve for x
    x = 11,723,769,028.05/101,071.48
  6. Step 6: Final answer
    x = 115,994.83

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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.