Home / 198,636.50-274,112.61-112,603.47

Finding the Fourth Proportional to 198,636.50, 274,112.61 and 112,603.47

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Solution

The fourth proportional to 198,636.50, 274,112.61 and 112,603.47 is: 155,389.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,636.50 : 274,112.61 = 112,603.47 : x
  2. Step 2: Convert to fraction form
    198,636.50/274,112.61 = 112,603.47/x
  3. Step 3: Cross multiply
    198,636.50x = 274,112.61 × 112,603.47
  4. Step 4: Simplify right side
    198,636.50x = 30,866,029,606.57
  5. Step 5: Solve for x
    x = 30,866,029,606.57/198,636.50
  6. Step 6: Final answer
    x = 155,389.51

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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.