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Finding the Fourth Proportional to 168,665.20, 253,192.20 and 102,180.40

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Solution

The fourth proportional to 168,665.20, 253,192.20 and 102,180.40 is: 153,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,665.20 : 253,192.20 = 102,180.40 : x
  2. Step 2: Convert to fraction form
    168,665.20/253,192.20 = 102,180.40/x
  3. Step 3: Cross multiply
    168,665.20x = 253,192.20 × 102,180.40
  4. Step 4: Simplify right side
    168,665.20x = 25,871,280,272.88
  5. Step 5: Solve for x
    x = 25,871,280,272.88/168,665.20
  6. Step 6: Final answer
    x = 153,388.37

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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.