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Finding the Fourth Proportional to 140,503.56, 193,899.96 and 80,083.32

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Solution

The fourth proportional to 140,503.56, 193,899.96 and 80,083.32 is: 110,517.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,503.56 : 193,899.96 = 80,083.32 : x
  2. Step 2: Convert to fraction form
    140,503.56/193,899.96 = 80,083.32/x
  3. Step 3: Cross multiply
    140,503.56x = 193,899.96 × 80,083.32
  4. Step 4: Simplify right side
    140,503.56x = 15,528,152,544.67
  5. Step 5: Solve for x
    x = 15,528,152,544.67/140,503.56
  6. Step 6: Final answer
    x = 110,517.86

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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.