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Finding the Fourth Proportional to 79,199.57, 118,204.52 and 68,478.62

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Solution

The fourth proportional to 79,199.57, 118,204.52 and 68,478.62 is: 102,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,199.57 : 118,204.52 = 68,478.62 : x
  2. Step 2: Convert to fraction form
    79,199.57/118,204.52 = 68,478.62/x
  3. Step 3: Cross multiply
    79,199.57x = 118,204.52 × 68,478.62
  4. Step 4: Simplify right side
    79,199.57x = 8,094,481,473.95
  5. Step 5: Solve for x
    x = 8,094,481,473.95/79,199.57
  6. Step 6: Final answer
    x = 102,203.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.