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Finding the Fourth Proportional to 101,956.48, 140,715.28 and 73,370.78

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Solution

The fourth proportional to 101,956.48, 140,715.28 and 73,370.78 is: 101,262.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,956.48 : 140,715.28 = 73,370.78 : x
  2. Step 2: Convert to fraction form
    101,956.48/140,715.28 = 73,370.78/x
  3. Step 3: Cross multiply
    101,956.48x = 140,715.28 × 73,370.78
  4. Step 4: Simplify right side
    101,956.48x = 10,324,389,851.52
  5. Step 5: Solve for x
    x = 10,324,389,851.52/101,956.48
  6. Step 6: Final answer
    x = 101,262.71

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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.