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Finding the Fourth Proportional to 161,213.60, 241,705.20 and 72,394.40

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Solution

The fourth proportional to 161,213.60, 241,705.20 and 72,394.40 is: 108,539.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,213.60 : 241,705.20 = 72,394.40 : x
  2. Step 2: Convert to fraction form
    161,213.60/241,705.20 = 72,394.40/x
  3. Step 3: Cross multiply
    161,213.60x = 241,705.20 × 72,394.40
  4. Step 4: Simplify right side
    161,213.60x = 17,498,102,930.88
  5. Step 5: Solve for x
    x = 17,498,102,930.88/161,213.60
  6. Step 6: Final answer
    x = 108,539.87

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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.