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Finding the Fourth Proportional to 197,122, 272,028.36 and 107,698

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Solution

The fourth proportional to 197,122, 272,028.36 and 107,698 is: 148,623.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,122 : 272,028.36 = 107,698 : x
  2. Step 2: Convert to fraction form
    197,122/272,028.36 = 107,698/x
  3. Step 3: Cross multiply
    197,122x = 272,028.36 × 107,698
  4. Step 4: Simplify right side
    197,122x = 29,296,910,315.28
  5. Step 5: Solve for x
    x = 29,296,910,315.28/197,122
  6. Step 6: Final answer
    x = 148,623.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.