Home / 198,981.70-274,580.87-112,942.43

Finding the Fourth Proportional to 198,981.70, 274,580.87 and 112,942.43

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Solution

The fourth proportional to 198,981.70, 274,580.87 and 112,942.43 is: 155,852.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,981.70 : 274,580.87 = 112,942.43 : x
  2. Step 2: Convert to fraction form
    198,981.70/274,580.87 = 112,942.43/x
  3. Step 3: Cross multiply
    198,981.70x = 274,580.87 × 112,942.43
  4. Step 4: Simplify right side
    198,981.70x = 31,011,831,961.19
  5. Step 5: Solve for x
    x = 31,011,831,961.19/198,981.70
  6. Step 6: Final answer
    x = 155,852.69

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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.