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Finding the Fourth Proportional to 198,998.01, 274,603.37 and 112,958.73

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Solution

The fourth proportional to 198,998.01, 274,603.37 and 112,958.73 is: 155,875.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,998.01 : 274,603.37 = 112,958.73 : x
  2. Step 2: Convert to fraction form
    198,998.01/274,603.37 = 112,958.73/x
  3. Step 3: Cross multiply
    198,998.01x = 274,603.37 × 112,958.73
  4. Step 4: Simplify right side
    198,998.01x = 31,018,847,364.13
  5. Step 5: Solve for x
    x = 31,018,847,364.13/198,998.01
  6. Step 6: Final answer
    x = 155,875.16

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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.