Home / 90,738.54-125,314.83-80,843.58

Finding the Fourth Proportional to 90,738.54, 125,314.83 and 80,843.58

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Solution

The fourth proportional to 90,738.54, 125,314.83 and 80,843.58 is: 111,649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.54 : 125,314.83 = 80,843.58 : x
  2. Step 2: Convert to fraction form
    90,738.54/125,314.83 = 80,843.58/x
  3. Step 3: Cross multiply
    90,738.54x = 125,314.83 × 80,843.58
  4. Step 4: Simplify right side
    90,738.54x = 10,130,899,484.29
  5. Step 5: Solve for x
    x = 10,130,899,484.29/90,738.54
  6. Step 6: Final answer
    x = 111,649.36

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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.