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Finding the Fourth Proportional to 168,212.70, 251,978.85 and 104,838.30

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Solution

The fourth proportional to 168,212.70, 251,978.85 and 104,838.30 is: 157,045.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,212.70 : 251,978.85 = 104,838.30 : x
  2. Step 2: Convert to fraction form
    168,212.70/251,978.85 = 104,838.30/x
  3. Step 3: Cross multiply
    168,212.70x = 251,978.85 × 104,838.30
  4. Step 4: Simplify right side
    168,212.70x = 26,417,034,269.96
  5. Step 5: Solve for x
    x = 26,417,034,269.96/168,212.70
  6. Step 6: Final answer
    x = 157,045.42

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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.