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Finding the Fourth Proportional to 193,381.97, 266,871.71 and 108,505.31

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Solution

The fourth proportional to 193,381.97, 266,871.71 and 108,505.31 is: 149,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,381.97 : 266,871.71 = 108,505.31 : x
  2. Step 2: Convert to fraction form
    193,381.97/266,871.71 = 108,505.31/x
  3. Step 3: Cross multiply
    193,381.97x = 266,871.71 × 108,505.31
  4. Step 4: Simplify right side
    193,381.97x = 28,956,996,560.68
  5. Step 5: Solve for x
    x = 28,956,996,560.68/193,381.97
  6. Step 6: Final answer
    x = 149,739.90

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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.