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Finding the Fourth Proportional to 101,243.75, 139,724.01 and 58,236.39

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Solution

The fourth proportional to 101,243.75, 139,724.01 and 58,236.39 is: 80,370.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,243.75 : 139,724.01 = 58,236.39 : x
  2. Step 2: Convert to fraction form
    101,243.75/139,724.01 = 58,236.39/x
  3. Step 3: Cross multiply
    101,243.75x = 139,724.01 × 58,236.39
  4. Step 4: Simplify right side
    101,243.75x = 8,137,022,495.49
  5. Step 5: Solve for x
    x = 8,137,022,495.49/101,243.75
  6. Step 6: Final answer
    x = 80,370.62

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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.