Home / 134,078.85-185,022.81-80,393.49

Finding the Fourth Proportional to 134,078.85, 185,022.81 and 80,393.49

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Solution

The fourth proportional to 134,078.85, 185,022.81 and 80,393.49 is: 110,939.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,078.85 : 185,022.81 = 80,393.49 : x
  2. Step 2: Convert to fraction form
    134,078.85/185,022.81 = 80,393.49/x
  3. Step 3: Cross multiply
    134,078.85x = 185,022.81 × 80,393.49
  4. Step 4: Simplify right side
    134,078.85x = 14,874,629,425.51
  5. Step 5: Solve for x
    x = 14,874,629,425.51/134,078.85
  6. Step 6: Final answer
    x = 110,939.42

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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.