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Finding the Fourth Proportional to 168,235.90, 252,401.51 and 68,467.68

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Solution

The fourth proportional to 168,235.90, 252,401.51 and 68,467.68 is: 102,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,235.90 : 252,401.51 = 68,467.68 : x
  2. Step 2: Convert to fraction form
    168,235.90/252,401.51 = 68,467.68/x
  3. Step 3: Cross multiply
    168,235.90x = 252,401.51 × 68,467.68
  4. Step 4: Simplify right side
    168,235.90x = 17,281,345,989.37
  5. Step 5: Solve for x
    x = 17,281,345,989.37/168,235.90
  6. Step 6: Final answer
    x = 102,720.92

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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.