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Finding the Fourth Proportional to 108,568.10, 162,852.15 and 73,138.70

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Solution

The fourth proportional to 108,568.10, 162,852.15 and 73,138.70 is: 109,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,568.10 : 162,852.15 = 73,138.70 : x
  2. Step 2: Convert to fraction form
    108,568.10/162,852.15 = 73,138.70/x
  3. Step 3: Cross multiply
    108,568.10x = 162,852.15 × 73,138.70
  4. Step 4: Simplify right side
    108,568.10x = 11,910,794,543.21
  5. Step 5: Solve for x
    x = 11,910,794,543.21/108,568.10
  6. Step 6: Final answer
    x = 109,708.05

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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.