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Finding the Fourth Proportional to 100,844.92, 139,169.02 and 55,527.64

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Solution

The fourth proportional to 100,844.92, 139,169.02 and 55,527.64 is: 76,629.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,844.92 : 139,169.02 = 55,527.64 : x
  2. Step 2: Convert to fraction form
    100,844.92/139,169.02 = 55,527.64/x
  3. Step 3: Cross multiply
    100,844.92x = 139,169.02 × 55,527.64
  4. Step 4: Simplify right side
    100,844.92x = 7,727,727,241.71
  5. Step 5: Solve for x
    x = 7,727,727,241.71/100,844.92
  6. Step 6: Final answer
    x = 76,629.81

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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.