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Finding the Fourth Proportional to 168,762.10, 253,143.39 and 68,922.30

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Solution

The fourth proportional to 168,762.10, 253,143.39 and 68,922.30 is: 103,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,762.10 : 253,143.39 = 68,922.30 : x
  2. Step 2: Convert to fraction form
    168,762.10/253,143.39 = 68,922.30/x
  3. Step 3: Cross multiply
    168,762.10x = 253,143.39 × 68,922.30
  4. Step 4: Simplify right side
    168,762.10x = 17,447,224,668.60
  5. Step 5: Solve for x
    x = 17,447,224,668.60/168,762.10
  6. Step 6: Final answer
    x = 103,383.55

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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.