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Finding the Fourth Proportional to 101,480.76, 140,112.36 and 63,255.60

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Solution

The fourth proportional to 101,480.76, 140,112.36 and 63,255.60 is: 87,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,480.76 : 140,112.36 = 63,255.60 : x
  2. Step 2: Convert to fraction form
    101,480.76/140,112.36 = 63,255.60/x
  3. Step 3: Cross multiply
    101,480.76x = 140,112.36 × 63,255.60
  4. Step 4: Simplify right side
    101,480.76x = 8,862,891,399.22
  5. Step 5: Solve for x
    x = 8,862,891,399.22/101,480.76
  6. Step 6: Final answer
    x = 87,335.68

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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.