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Finding the Fourth Proportional to 139,620.66, 192,677.36 and 75,958.91

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Solution

The fourth proportional to 139,620.66, 192,677.36 and 75,958.91 is: 104,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,620.66 : 192,677.36 = 75,958.91 : x
  2. Step 2: Convert to fraction form
    139,620.66/192,677.36 = 75,958.91/x
  3. Step 3: Cross multiply
    139,620.66x = 192,677.36 × 75,958.91
  4. Step 4: Simplify right side
    139,620.66x = 14,635,562,924.08
  5. Step 5: Solve for x
    x = 14,635,562,924.08/139,620.66
  6. Step 6: Final answer
    x = 104,823.76

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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.