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Finding the Fourth Proportional to 79,213.74, 118,525.32 and 78,327.96

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Solution

The fourth proportional to 79,213.74, 118,525.32 and 78,327.96 is: 117,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,213.74 : 118,525.32 = 78,327.96 : x
  2. Step 2: Convert to fraction form
    79,213.74/118,525.32 = 78,327.96/x
  3. Step 3: Cross multiply
    79,213.74x = 118,525.32 × 78,327.96
  4. Step 4: Simplify right side
    79,213.74x = 9,283,846,523.95
  5. Step 5: Solve for x
    x = 9,283,846,523.95/79,213.74
  6. Step 6: Final answer
    x = 117,199.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.