Home / 133,178.28-183,791.38-76,589.64

Finding the Fourth Proportional to 133,178.28, 183,791.38 and 76,589.64

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Solution

The fourth proportional to 133,178.28, 183,791.38 and 76,589.64 is: 105,696.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,178.28 : 183,791.38 = 76,589.64 : x
  2. Step 2: Convert to fraction form
    133,178.28/183,791.38 = 76,589.64/x
  3. Step 3: Cross multiply
    133,178.28x = 183,791.38 × 76,589.64
  4. Step 4: Simplify right side
    133,178.28x = 14,076,515,629.30
  5. Step 5: Solve for x
    x = 14,076,515,629.30/133,178.28
  6. Step 6: Final answer
    x = 105,696.78

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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.