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Finding the Fourth Proportional to 162,648.66, 243,847.90 and 82,620.86

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Solution

The fourth proportional to 162,648.66, 243,847.90 and 82,620.86 is: 123,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,648.66 : 243,847.90 = 82,620.86 : x
  2. Step 2: Convert to fraction form
    162,648.66/243,847.90 = 82,620.86/x
  3. Step 3: Cross multiply
    162,648.66x = 243,847.90 × 82,620.86
  4. Step 4: Simplify right side
    162,648.66x = 20,146,923,207.19
  5. Step 5: Solve for x
    x = 20,146,923,207.19/162,648.66
  6. Step 6: Final answer
    x = 123,867.75

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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.