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Finding the Fourth Proportional to 168,039, 251,969.40 and 49,693.95

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Solution

The fourth proportional to 168,039, 251,969.40 and 49,693.95 is: 74,514.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,039 : 251,969.40 = 49,693.95 : x
  2. Step 2: Convert to fraction form
    168,039/251,969.40 = 49,693.95/x
  3. Step 3: Cross multiply
    168,039x = 251,969.40 × 49,693.95
  4. Step 4: Simplify right side
    168,039x = 12,521,354,765.13
  5. Step 5: Solve for x
    x = 12,521,354,765.13/168,039
  6. Step 6: Final answer
    x = 74,514.58

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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.