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Finding the Fourth Proportional to 68,181.70, 102,176.55 and 54,165.70

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Solution

The fourth proportional to 68,181.70, 102,176.55 and 54,165.70 is: 81,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,181.70 : 102,176.55 = 54,165.70 : x
  2. Step 2: Convert to fraction form
    68,181.70/102,176.55 = 54,165.70/x
  3. Step 3: Cross multiply
    68,181.70x = 102,176.55 × 54,165.70
  4. Step 4: Simplify right side
    68,181.70x = 5,534,464,354.34
  5. Step 5: Solve for x
    x = 5,534,464,354.34/68,181.70
  6. Step 6: Final answer
    x = 81,172.28

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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.