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Finding the Fourth Proportional to 168,423.81, 252,487.08 and 68,667.45

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Solution

The fourth proportional to 168,423.81, 252,487.08 and 68,667.45 is: 102,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,423.81 : 252,487.08 = 68,667.45 : x
  2. Step 2: Convert to fraction form
    168,423.81/252,487.08 = 68,667.45/x
  3. Step 3: Cross multiply
    168,423.81x = 252,487.08 × 68,667.45
  4. Step 4: Simplify right side
    168,423.81x = 17,337,643,941.55
  5. Step 5: Solve for x
    x = 17,337,643,941.55/168,423.81
  6. Step 6: Final answer
    x = 102,940.58

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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.