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Finding the Fourth Proportional to 140,335.30, 193,653.42 and 79,912.12

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Solution

The fourth proportional to 140,335.30, 193,653.42 and 79,912.12 is: 110,273.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,335.30 : 193,653.42 = 79,912.12 : x
  2. Step 2: Convert to fraction form
    140,335.30/193,653.42 = 79,912.12/x
  3. Step 3: Cross multiply
    140,335.30x = 193,653.42 × 79,912.12
  4. Step 4: Simplify right side
    140,335.30x = 15,475,255,337.45
  5. Step 5: Solve for x
    x = 15,475,255,337.45/140,335.30
  6. Step 6: Final answer
    x = 110,273.43

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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.