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Finding the Fourth Proportional to 101,471.44, 140,021.05 and 68,699.19

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Solution

The fourth proportional to 101,471.44, 140,021.05 and 68,699.19 is: 94,798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,471.44 : 140,021.05 = 68,699.19 : x
  2. Step 2: Convert to fraction form
    101,471.44/140,021.05 = 68,699.19/x
  3. Step 3: Cross multiply
    101,471.44x = 140,021.05 × 68,699.19
  4. Step 4: Simplify right side
    101,471.44x = 9,619,332,717.95
  5. Step 5: Solve for x
    x = 9,619,332,717.95/101,471.44
  6. Step 6: Final answer
    x = 94,798.43

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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.