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Finding the Fourth Proportional to 168,411.81, 252,469.08 and 68,655.45

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Solution

The fourth proportional to 168,411.81, 252,469.08 and 68,655.45 is: 102,922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,411.81 : 252,469.08 = 68,655.45 : x
  2. Step 2: Convert to fraction form
    168,411.81/252,469.08 = 68,655.45/x
  3. Step 3: Cross multiply
    168,411.81x = 252,469.08 × 68,655.45
  4. Step 4: Simplify right side
    168,411.81x = 17,333,378,298.49
  5. Step 5: Solve for x
    x = 17,333,378,298.49/168,411.81
  6. Step 6: Final answer
    x = 102,922.58

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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.