Home / 137,743.38-190,064.61-80,382.42

Finding the Fourth Proportional to 137,743.38, 190,064.61 and 80,382.42

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Solution

The fourth proportional to 137,743.38, 190,064.61 and 80,382.42 is: 110,915.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,743.38 : 190,064.61 = 80,382.42 : x
  2. Step 2: Convert to fraction form
    137,743.38/190,064.61 = 80,382.42/x
  3. Step 3: Cross multiply
    137,743.38x = 190,064.61 × 80,382.42
  4. Step 4: Simplify right side
    137,743.38x = 15,277,853,308.16
  5. Step 5: Solve for x
    x = 15,277,853,308.16/137,743.38
  6. Step 6: Final answer
    x = 110,915.34

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1.5x scale

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.