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Finding the Fourth Proportional to 98,447.52, 135,571.66 and 85,520.86

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Solution

The fourth proportional to 98,447.52, 135,571.66 and 85,520.86 is: 117,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,447.52 : 135,571.66 = 85,520.86 : x
  2. Step 2: Convert to fraction form
    98,447.52/135,571.66 = 85,520.86/x
  3. Step 3: Cross multiply
    98,447.52x = 135,571.66 × 85,520.86
  4. Step 4: Simplify right side
    98,447.52x = 11,594,204,954.83
  5. Step 5: Solve for x
    x = 11,594,204,954.83/98,447.52
  6. Step 6: Final answer
    x = 117,770.41

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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.