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Finding the Fourth Proportional to 161,990.90, 242,958.66 and 43,634.56

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Solution

The fourth proportional to 161,990.90, 242,958.66 and 43,634.56 is: 65,444.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,990.90 : 242,958.66 = 43,634.56 : x
  2. Step 2: Convert to fraction form
    161,990.90/242,958.66 = 43,634.56/x
  3. Step 3: Cross multiply
    161,990.90x = 242,958.66 × 43,634.56
  4. Step 4: Simplify right side
    161,990.90x = 10,601,394,421.90
  5. Step 5: Solve for x
    x = 10,601,394,421.90/161,990.90
  6. Step 6: Final answer
    x = 65,444.38

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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.