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Finding the Fourth Proportional to 161,801.12, 242,679 and 68,285

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Solution

The fourth proportional to 161,801.12, 242,679 and 68,285 is: 102,417.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,801.12 : 242,679 = 68,285 : x
  2. Step 2: Convert to fraction form
    161,801.12/242,679 = 68,285/x
  3. Step 3: Cross multiply
    161,801.12x = 242,679 × 68,285
  4. Step 4: Simplify right side
    161,801.12x = 16,571,335,515
  5. Step 5: Solve for x
    x = 16,571,335,515/161,801.12
  6. Step 6: Final answer
    x = 102,417.93

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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.