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Finding the Fourth Proportional to 140,329.33, 193,654.66 and 79,900

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Solution

The fourth proportional to 140,329.33, 193,654.66 and 79,900 is: 110,262.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,329.33 : 193,654.66 = 79,900 : x
  2. Step 2: Convert to fraction form
    140,329.33/193,654.66 = 79,900/x
  3. Step 3: Cross multiply
    140,329.33x = 193,654.66 × 79,900
  4. Step 4: Simplify right side
    140,329.33x = 15,473,007,334
  5. Step 5: Solve for x
    x = 15,473,007,334/140,329.33
  6. Step 6: Final answer
    x = 110,262.11

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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.