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Finding the Fourth Proportional to 108,512.10, 162,768.15 and 91,016.10

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Solution

The fourth proportional to 108,512.10, 162,768.15 and 91,016.10 is: 136,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,512.10 : 162,768.15 = 91,016.10 : x
  2. Step 2: Convert to fraction form
    108,512.10/162,768.15 = 91,016.10/x
  3. Step 3: Cross multiply
    108,512.10x = 162,768.15 × 91,016.10
  4. Step 4: Simplify right side
    108,512.10x = 14,814,522,217.22
  5. Step 5: Solve for x
    x = 14,814,522,217.22/108,512.10
  6. Step 6: Final answer
    x = 136,524.15

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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.