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Finding the Fourth Proportional to 161,481, 242,150.82 and 81,469.74

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Solution

The fourth proportional to 161,481, 242,150.82 and 81,469.74 is: 122,168.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,481 : 242,150.82 = 81,469.74 : x
  2. Step 2: Convert to fraction form
    161,481/242,150.82 = 81,469.74/x
  3. Step 3: Cross multiply
    161,481x = 242,150.82 × 81,469.74
  4. Step 4: Simplify right side
    161,481x = 19,727,964,346.19
  5. Step 5: Solve for x
    x = 19,727,964,346.19/161,481
  6. Step 6: Final answer
    x = 122,168.95

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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.