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Finding the Fourth Proportional to 140,203.89, 193,474.62 and 79,768.89

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Solution

The fourth proportional to 140,203.89, 193,474.62 and 79,768.89 is: 110,077.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,203.89 : 193,474.62 = 79,768.89 : x
  2. Step 2: Convert to fraction form
    140,203.89/193,474.62 = 79,768.89/x
  3. Step 3: Cross multiply
    140,203.89x = 193,474.62 × 79,768.89
  4. Step 4: Simplify right side
    140,203.89x = 15,433,255,680.57
  5. Step 5: Solve for x
    x = 15,433,255,680.57/140,203.89
  6. Step 6: Final answer
    x = 110,077.23

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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.