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Finding the Fourth Proportional to 162,613.40, 243,847.20 and 73,821.20

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Solution

The fourth proportional to 162,613.40, 243,847.20 and 73,821.20 is: 110,698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,613.40 : 243,847.20 = 73,821.20 : x
  2. Step 2: Convert to fraction form
    162,613.40/243,847.20 = 73,821.20/x
  3. Step 3: Cross multiply
    162,613.40x = 243,847.20 × 73,821.20
  4. Step 4: Simplify right side
    162,613.40x = 18,001,092,920.64
  5. Step 5: Solve for x
    x = 18,001,092,920.64/162,613.40
  6. Step 6: Final answer
    x = 110,698.71

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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.