Home / 137,963.12-190,389.82-80,605.70

Finding the Fourth Proportional to 137,963.12, 190,389.82 and 80,605.70

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Solution

The fourth proportional to 137,963.12, 190,389.82 and 80,605.70 is: 111,236.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,963.12 : 190,389.82 = 80,605.70 : x
  2. Step 2: Convert to fraction form
    137,963.12/190,389.82 = 80,605.70/x
  3. Step 3: Cross multiply
    137,963.12x = 190,389.82 × 80,605.70
  4. Step 4: Simplify right side
    137,963.12x = 15,346,504,713.97
  5. Step 5: Solve for x
    x = 15,346,504,713.97/137,963.12
  6. Step 6: Final answer
    x = 111,236.28

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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.