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Finding the Fourth Proportional to 198,979, 274,773.47 and 126,405.33

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Solution

The fourth proportional to 198,979, 274,773.47 and 126,405.33 is: 174,555.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,979 : 274,773.47 = 126,405.33 : x
  2. Step 2: Convert to fraction form
    198,979/274,773.47 = 126,405.33/x
  3. Step 3: Cross multiply
    198,979x = 274,773.47 × 126,405.33
  4. Step 4: Simplify right side
    198,979x = 34,732,831,150.60
  5. Step 5: Solve for x
    x = 34,732,831,150.60/198,979
  6. Step 6: Final answer
    x = 174,555.26

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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.