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Finding the Fourth Proportional to 161,940.50, 242,852.42 and 68,453.54

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Solution

The fourth proportional to 161,940.50, 242,852.42 and 68,453.54 is: 102,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,940.50 : 242,852.42 = 68,453.54 : x
  2. Step 2: Convert to fraction form
    161,940.50/242,852.42 = 68,453.54/x
  3. Step 3: Cross multiply
    161,940.50x = 242,852.42 × 68,453.54
  4. Step 4: Simplify right side
    161,940.50x = 16,624,106,803.44
  5. Step 5: Solve for x
    x = 16,624,106,803.44/161,940.50
  6. Step 6: Final answer
    x = 102,655.65

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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.