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Finding the Fourth Proportional to 139,633.22, 192,694.65 and 75,971.45

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Solution

The fourth proportional to 139,633.22, 192,694.65 and 75,971.45 is: 104,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,633.22 : 192,694.65 = 75,971.45 : x
  2. Step 2: Convert to fraction form
    139,633.22/192,694.65 = 75,971.45/x
  3. Step 3: Cross multiply
    139,633.22x = 192,694.65 × 75,971.45
  4. Step 4: Simplify right side
    139,633.22x = 14,639,291,967.74
  5. Step 5: Solve for x
    x = 14,639,291,967.74/139,633.22
  6. Step 6: Final answer
    x = 104,841.04

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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.