Home / 198,838.32-274,403.36-113,971.40

Finding the Fourth Proportional to 198,838.32, 274,403.36 and 113,971.40

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Solution

The fourth proportional to 198,838.32, 274,403.36 and 113,971.40 is: 157,284.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,838.32 : 274,403.36 = 113,971.40 : x
  2. Step 2: Convert to fraction form
    198,838.32/274,403.36 = 113,971.40/x
  3. Step 3: Cross multiply
    198,838.32x = 274,403.36 × 113,971.40
  4. Step 4: Simplify right side
    198,838.32x = 31,274,135,103.90
  5. Step 5: Solve for x
    x = 31,274,135,103.90/198,838.32
  6. Step 6: Final answer
    x = 157,284.25

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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.