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Finding the Fourth Proportional to 144,166.38, 198,948.81 and 79,640.06

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Solution

The fourth proportional to 144,166.38, 198,948.81 and 79,640.06 is: 109,902.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,166.38 : 198,948.81 = 79,640.06 : x
  2. Step 2: Convert to fraction form
    144,166.38/198,948.81 = 79,640.06/x
  3. Step 3: Cross multiply
    144,166.38x = 198,948.81 × 79,640.06
  4. Step 4: Simplify right side
    144,166.38x = 15,844,295,165.33
  5. Step 5: Solve for x
    x = 15,844,295,165.33/144,166.38
  6. Step 6: Final answer
    x = 109,902.84

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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.