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Finding the Fourth Proportional to 162,785.80, 243,984.30 and 68,015.80

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Solution

The fourth proportional to 162,785.80, 243,984.30 and 68,015.80 is: 101,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,785.80 : 243,984.30 = 68,015.80 : x
  2. Step 2: Convert to fraction form
    162,785.80/243,984.30 = 68,015.80/x
  3. Step 3: Cross multiply
    162,785.80x = 243,984.30 × 68,015.80
  4. Step 4: Simplify right side
    162,785.80x = 16,594,787,351.94
  5. Step 5: Solve for x
    x = 16,594,787,351.94/162,785.80
  6. Step 6: Final answer
    x = 101,942.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.