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Finding the Fourth Proportional to 131,242.94, 196,704.47 and 68,028.21

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Solution

The fourth proportional to 131,242.94, 196,704.47 and 68,028.21 is: 101,959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,242.94 : 196,704.47 = 68,028.21 : x
  2. Step 2: Convert to fraction form
    131,242.94/196,704.47 = 68,028.21/x
  3. Step 3: Cross multiply
    131,242.94x = 196,704.47 × 68,028.21
  4. Step 4: Simplify right side
    131,242.94x = 13,381,453,163.17
  5. Step 5: Solve for x
    x = 13,381,453,163.17/131,242.94
  6. Step 6: Final answer
    x = 101,959.41

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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.