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Finding the Fourth Proportional to 140,487.96, 193,871.52 and 80,062.20

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Solution

The fourth proportional to 140,487.96, 193,871.52 and 80,062.20 is: 110,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,487.96 : 193,871.52 = 80,062.20 : x
  2. Step 2: Convert to fraction form
    140,487.96/193,871.52 = 80,062.20/x
  3. Step 3: Cross multiply
    140,487.96x = 193,871.52 × 80,062.20
  4. Step 4: Simplify right side
    140,487.96x = 15,521,780,408.54
  5. Step 5: Solve for x
    x = 15,521,780,408.54/140,487.96
  6. Step 6: Final answer
    x = 110,484.77

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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.