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Finding the Fourth Proportional to 108,716.20, 162,815.10 and 108,716.20

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Solution

The fourth proportional to 108,716.20, 162,815.10 and 108,716.20 is: 162,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,716.20 : 162,815.10 = 108,716.20 : x
  2. Step 2: Convert to fraction form
    108,716.20/162,815.10 = 108,716.20/x
  3. Step 3: Cross multiply
    108,716.20x = 162,815.10 × 108,716.20
  4. Step 4: Simplify right side
    108,716.20x = 17,700,638,974.62
  5. Step 5: Solve for x
    x = 17,700,638,974.62/108,716.20
  6. Step 6: Final answer
    x = 162,815.10

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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.