Home / 137,868.26-190,209.75-90,149.54

Finding the Fourth Proportional to 137,868.26, 190,209.75 and 90,149.54

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Solution

The fourth proportional to 137,868.26, 190,209.75 and 90,149.54 is: 124,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,868.26 : 190,209.75 = 90,149.54 : x
  2. Step 2: Convert to fraction form
    137,868.26/190,209.75 = 90,149.54/x
  3. Step 3: Cross multiply
    137,868.26x = 190,209.75 × 90,149.54
  4. Step 4: Simplify right side
    137,868.26x = 17,147,321,466.02
  5. Step 5: Solve for x
    x = 17,147,321,466.02/137,868.26
  6. Step 6: Final answer
    x = 124,374.69

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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.