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Finding the Fourth Proportional to 140,875.92, 194,398.88 and 80,449.92

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Solution

The fourth proportional to 140,875.92, 194,398.88 and 80,449.92 is: 111,015.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,875.92 : 194,398.88 = 80,449.92 : x
  2. Step 2: Convert to fraction form
    140,875.92/194,398.88 = 80,449.92/x
  3. Step 3: Cross multiply
    140,875.92x = 194,398.88 × 80,449.92
  4. Step 4: Simplify right side
    140,875.92x = 15,639,374,344.09
  5. Step 5: Solve for x
    x = 15,639,374,344.09/140,875.92
  6. Step 6: Final answer
    x = 111,015.24

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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.