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Finding the Fourth Proportional to 131,085.44, 180,900.48 and 71,469.44

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Solution

The fourth proportional to 131,085.44, 180,900.48 and 71,469.44 is: 98,629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,085.44 : 180,900.48 = 71,469.44 : x
  2. Step 2: Convert to fraction form
    131,085.44/180,900.48 = 71,469.44/x
  3. Step 3: Cross multiply
    131,085.44x = 180,900.48 × 71,469.44
  4. Step 4: Simplify right side
    131,085.44x = 12,928,856,001.33
  5. Step 5: Solve for x
    x = 12,928,856,001.33/131,085.44
  6. Step 6: Final answer
    x = 98,629.23

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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.