Home / 129,789.96-179,148.44-76,086.60

Finding the Fourth Proportional to 129,789.96, 179,148.44 and 76,086.60

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Solution

The fourth proportional to 129,789.96, 179,148.44 and 76,086.60 is: 105,021.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.96 : 179,148.44 = 76,086.60 : x
  2. Step 2: Convert to fraction form
    129,789.96/179,148.44 = 76,086.60/x
  3. Step 3: Cross multiply
    129,789.96x = 179,148.44 × 76,086.60
  4. Step 4: Simplify right side
    129,789.96x = 13,630,795,694.90
  5. Step 5: Solve for x
    x = 13,630,795,694.90/129,789.96
  6. Step 6: Final answer
    x = 105,021.96

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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.