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Finding the Fourth Proportional to 146,706, 220,059 and 81,042

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Solution

The fourth proportional to 146,706, 220,059 and 81,042 is: 121,563

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,706 : 220,059 = 81,042 : x
  2. Step 2: Convert to fraction form
    146,706/220,059 = 81,042/x
  3. Step 3: Cross multiply
    146,706x = 220,059 × 81,042
  4. Step 4: Simplify right side
    146,706x = 17,834,021,478
  5. Step 5: Solve for x
    x = 17,834,021,478/146,706
  6. Step 6: Final answer
    x = 121,563

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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.