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Finding the Fourth Proportional to 139,573.86, 192,619.80 and 75,910.38

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Solution

The fourth proportional to 139,573.86, 192,619.80 and 75,910.38 is: 104,760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.86 : 192,619.80 = 75,910.38 : x
  2. Step 2: Convert to fraction form
    139,573.86/192,619.80 = 75,910.38/x
  3. Step 3: Cross multiply
    139,573.86x = 192,619.80 × 75,910.38
  4. Step 4: Simplify right side
    139,573.86x = 14,621,842,213.52
  5. Step 5: Solve for x
    x = 14,621,842,213.52/139,573.86
  6. Step 6: Final answer
    x = 104,760.61

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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.