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Finding the Fourth Proportional to 143,696.99, 198,307.92 and 80,034.78

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Solution

The fourth proportional to 143,696.99, 198,307.92 and 80,034.78 is: 110,451.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,696.99 : 198,307.92 = 80,034.78 : x
  2. Step 2: Convert to fraction form
    143,696.99/198,307.92 = 80,034.78/x
  3. Step 3: Cross multiply
    143,696.99x = 198,307.92 × 80,034.78
  4. Step 4: Simplify right side
    143,696.99x = 15,871,530,749.46
  5. Step 5: Solve for x
    x = 15,871,530,749.46/143,696.99
  6. Step 6: Final answer
    x = 110,451.38

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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.