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Finding the Fourth Proportional to 179,940.80, 269,680.80 and 138,180.80

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Solution

The fourth proportional to 179,940.80, 269,680.80 and 138,180.80 is: 207,094.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,940.80 : 269,680.80 = 138,180.80 : x
  2. Step 2: Convert to fraction form
    179,940.80/269,680.80 = 138,180.80/x
  3. Step 3: Cross multiply
    179,940.80x = 269,680.80 × 138,180.80
  4. Step 4: Simplify right side
    179,940.80x = 37,264,708,688.64
  5. Step 5: Solve for x
    x = 37,264,708,688.64/179,940.80
  6. Step 6: Final answer
    x = 207,094.27

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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.