Home / 76,142.43-113,965.25-68,867.55

Finding the Fourth Proportional to 76,142.43, 113,965.25 and 68,867.55

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Solution

The fourth proportional to 76,142.43, 113,965.25 and 68,867.55 is: 103,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,142.43 : 113,965.25 = 68,867.55 : x
  2. Step 2: Convert to fraction form
    76,142.43/113,965.25 = 68,867.55/x
  3. Step 3: Cross multiply
    76,142.43x = 113,965.25 × 68,867.55
  4. Step 4: Simplify right side
    76,142.43x = 7,848,507,208.30
  5. Step 5: Solve for x
    x = 7,848,507,208.30/76,142.43
  6. Step 6: Final answer
    x = 103,076.66

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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.