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Finding the Fourth Proportional to 139,163.88, 192,044.43 and 75,501.21

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Solution

The fourth proportional to 139,163.88, 192,044.43 and 75,501.21 is: 104,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163.88 : 192,044.43 = 75,501.21 : x
  2. Step 2: Convert to fraction form
    139,163.88/192,044.43 = 75,501.21/x
  3. Step 3: Cross multiply
    139,163.88x = 192,044.43 × 75,501.21
  4. Step 4: Simplify right side
    139,163.88x = 14,499,586,838.76
  5. Step 5: Solve for x
    x = 14,499,586,838.76/139,163.88
  6. Step 6: Final answer
    x = 104,190.73

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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.