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Finding the Fourth Proportional to 161,766.70, 242,563.65 and 68,166.70

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Solution

The fourth proportional to 161,766.70, 242,563.65 and 68,166.70 is: 102,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,766.70 : 242,563.65 = 68,166.70 : x
  2. Step 2: Convert to fraction form
    161,766.70/242,563.65 = 68,166.70/x
  3. Step 3: Cross multiply
    161,766.70x = 242,563.65 × 68,166.70
  4. Step 4: Simplify right side
    161,766.70x = 16,534,763,560.46
  5. Step 5: Solve for x
    x = 16,534,763,560.46/161,766.70
  6. Step 6: Final answer
    x = 102,213.64

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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.