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Finding the Fourth Proportional to 101,107.73, 139,527.68 and 55,786.05

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Solution

The fourth proportional to 101,107.73, 139,527.68 and 55,786.05 is: 76,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,107.73 : 139,527.68 = 55,786.05 : x
  2. Step 2: Convert to fraction form
    101,107.73/139,527.68 = 55,786.05/x
  3. Step 3: Cross multiply
    101,107.73x = 139,527.68 × 55,786.05
  4. Step 4: Simplify right side
    101,107.73x = 7,783,698,132.86
  5. Step 5: Solve for x
    x = 7,783,698,132.86/101,107.73
  6. Step 6: Final answer
    x = 76,984.20

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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.