Home / 150,102.75-207,142.61-82,120.53

Finding the Fourth Proportional to 150,102.75, 207,142.61 and 82,120.53

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Solution

The fourth proportional to 150,102.75, 207,142.61 and 82,120.53 is: 113,326.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,102.75 : 207,142.61 = 82,120.53 : x
  2. Step 2: Convert to fraction form
    150,102.75/207,142.61 = 82,120.53/x
  3. Step 3: Cross multiply
    150,102.75x = 207,142.61 × 82,120.53
  4. Step 4: Simplify right side
    150,102.75x = 17,010,660,918.78
  5. Step 5: Solve for x
    x = 17,010,660,918.78/150,102.75
  6. Step 6: Final answer
    x = 113,326.78

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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.