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Finding the Fourth Proportional to 140,277.64, 193,575.30 and 79,863

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Solution

The fourth proportional to 140,277.64, 193,575.30 and 79,863 is: 110,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,277.64 : 193,575.30 = 79,863 : x
  2. Step 2: Convert to fraction form
    140,277.64/193,575.30 = 79,863/x
  3. Step 3: Cross multiply
    140,277.64x = 193,575.30 × 79,863
  4. Step 4: Simplify right side
    140,277.64x = 15,459,504,183.90
  5. Step 5: Solve for x
    x = 15,459,504,183.90/140,277.64
  6. Step 6: Final answer
    x = 110,206.47

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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.