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Finding the Fourth Proportional to 143,608.70, 198,174.66 and 79,945.14

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Solution

The fourth proportional to 143,608.70, 198,174.66 and 79,945.14 is: 110,321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608.70 : 198,174.66 = 79,945.14 : x
  2. Step 2: Convert to fraction form
    143,608.70/198,174.66 = 79,945.14/x
  3. Step 3: Cross multiply
    143,608.70x = 198,174.66 × 79,945.14
  4. Step 4: Simplify right side
    143,608.70x = 15,843,100,938.15
  5. Step 5: Solve for x
    x = 15,843,100,938.15/143,608.70
  6. Step 6: Final answer
    x = 110,321.32

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1.5x scale

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.