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Finding the Fourth Proportional to 161,722.80, 242,584.20 and 73,149.30

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Solution

The fourth proportional to 161,722.80, 242,584.20 and 73,149.30 is: 109,723.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,722.80 : 242,584.20 = 73,149.30 : x
  2. Step 2: Convert to fraction form
    161,722.80/242,584.20 = 73,149.30/x
  3. Step 3: Cross multiply
    161,722.80x = 242,584.20 × 73,149.30
  4. Step 4: Simplify right side
    161,722.80x = 17,744,864,421.06
  5. Step 5: Solve for x
    x = 17,744,864,421.06/161,722.80
  6. Step 6: Final answer
    x = 109,723.95

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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.