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Finding the Fourth Proportional to 139,674.83, 192,755.30 and 76,016.66

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Solution

The fourth proportional to 139,674.83, 192,755.30 and 76,016.66 is: 104,905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,674.83 : 192,755.30 = 76,016.66 : x
  2. Step 2: Convert to fraction form
    139,674.83/192,755.30 = 76,016.66/x
  3. Step 3: Cross multiply
    139,674.83x = 192,755.30 × 76,016.66
  4. Step 4: Simplify right side
    139,674.83x = 14,652,612,759.44
  5. Step 5: Solve for x
    x = 14,652,612,759.44/139,674.83
  6. Step 6: Final answer
    x = 104,905.18

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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.