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Finding the Fourth Proportional to 198,342, 273,726.54 and 122,905.08

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Solution

The fourth proportional to 198,342, 273,726.54 and 122,905.08 is: 169,618.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,342 : 273,726.54 = 122,905.08 : x
  2. Step 2: Convert to fraction form
    198,342/273,726.54 = 122,905.08/x
  3. Step 3: Cross multiply
    198,342x = 273,726.54 × 122,905.08
  4. Step 4: Simplify right side
    198,342x = 33,642,382,296.82
  5. Step 5: Solve for x
    x = 33,642,382,296.82/198,342
  6. Step 6: Final answer
    x = 169,618.05

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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.