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Finding the Fourth Proportional to 140,090.79, 193,324.36 and 79,661.44

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Solution

The fourth proportional to 140,090.79, 193,324.36 and 79,661.44 is: 109,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,090.79 : 193,324.36 = 79,661.44 : x
  2. Step 2: Convert to fraction form
    140,090.79/193,324.36 = 79,661.44/x
  3. Step 3: Cross multiply
    140,090.79x = 193,324.36 × 79,661.44
  4. Step 4: Simplify right side
    140,090.79x = 15,400,496,506.37
  5. Step 5: Solve for x
    x = 15,400,496,506.37/140,090.79
  6. Step 6: Final answer
    x = 109,932.26

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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.