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Finding the Fourth Proportional to 161,199.60, 241,684.20 and 72,380.40

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Solution

The fourth proportional to 161,199.60, 241,684.20 and 72,380.40 is: 108,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,199.60 : 241,684.20 = 72,380.40 : x
  2. Step 2: Convert to fraction form
    161,199.60/241,684.20 = 72,380.40/x
  3. Step 3: Cross multiply
    161,199.60x = 241,684.20 × 72,380.40
  4. Step 4: Simplify right side
    161,199.60x = 17,493,199,069.68
  5. Step 5: Solve for x
    x = 17,493,199,069.68/161,199.60
  6. Step 6: Final answer
    x = 108,518.87

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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.