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Finding the Fourth Proportional to 101,395.92, 139,835.48 and 84,456.38

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Solution

The fourth proportional to 101,395.92, 139,835.48 and 84,456.38 is: 116,474.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,395.92 : 139,835.48 = 84,456.38 : x
  2. Step 2: Convert to fraction form
    101,395.92/139,835.48 = 84,456.38/x
  3. Step 3: Cross multiply
    101,395.92x = 139,835.48 × 84,456.38
  4. Step 4: Simplify right side
    101,395.92x = 11,809,998,436.36
  5. Step 5: Solve for x
    x = 11,809,998,436.36/101,395.92
  6. Step 6: Final answer
    x = 116,474.10

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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.