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Finding the Fourth Proportional to 144,166.75, 198,946.05 and 79,634.70

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Solution

The fourth proportional to 144,166.75, 198,946.05 and 79,634.70 is: 109,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,166.75 : 198,946.05 = 79,634.70 : x
  2. Step 2: Convert to fraction form
    144,166.75/198,946.05 = 79,634.70/x
  3. Step 3: Cross multiply
    144,166.75x = 198,946.05 × 79,634.70
  4. Step 4: Simplify right side
    144,166.75x = 15,843,008,709.30
  5. Step 5: Solve for x
    x = 15,843,008,709.30/144,166.75
  6. Step 6: Final answer
    x = 109,893.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.