Home / 87,629.80-131,444.70-85,037.80

Finding the Fourth Proportional to 87,629.80, 131,444.70 and 85,037.80

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Solution

The fourth proportional to 87,629.80, 131,444.70 and 85,037.80 is: 127,556.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.80 : 131,444.70 = 85,037.80 : x
  2. Step 2: Convert to fraction form
    87,629.80/131,444.70 = 85,037.80/x
  3. Step 3: Cross multiply
    87,629.80x = 131,444.70 × 85,037.80
  4. Step 4: Simplify right side
    87,629.80x = 11,177,768,109.66
  5. Step 5: Solve for x
    x = 11,177,768,109.66/87,629.80
  6. Step 6: Final answer
    x = 127,556.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.