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Finding the Fourth Proportional to 161,697.16, 242,579.34 and 68,203.72

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Solution

The fourth proportional to 161,697.16, 242,579.34 and 68,203.72 is: 102,319.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,697.16 : 242,579.34 = 68,203.72 : x
  2. Step 2: Convert to fraction form
    161,697.16/242,579.34 = 68,203.72/x
  3. Step 3: Cross multiply
    161,697.16x = 242,579.34 × 68,203.72
  4. Step 4: Simplify right side
    161,697.16x = 16,544,813,383.14
  5. Step 5: Solve for x
    x = 16,544,813,383.14/161,697.16
  6. Step 6: Final answer
    x = 102,319.75

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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.