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Finding the Fourth Proportional to 101,137.28, 139,621.93 and 73,882.77

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Solution

The fourth proportional to 101,137.28, 139,621.93 and 73,882.77 is: 101,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,137.28 : 139,621.93 = 73,882.77 : x
  2. Step 2: Convert to fraction form
    101,137.28/139,621.93 = 73,882.77/x
  3. Step 3: Cross multiply
    101,137.28x = 139,621.93 × 73,882.77
  4. Step 4: Simplify right side
    101,137.28x = 10,315,654,232.86
  5. Step 5: Solve for x
    x = 10,315,654,232.86/101,137.28
  6. Step 6: Final answer
    x = 101,996.56

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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.