Home / 198,980.19-274,578.80-112,940.93

Finding the Fourth Proportional to 198,980.19, 274,578.80 and 112,940.93

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Solution

The fourth proportional to 198,980.19, 274,578.80 and 112,940.93 is: 155,850.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,980.19 : 274,578.80 = 112,940.93 : x
  2. Step 2: Convert to fraction form
    198,980.19/274,578.80 = 112,940.93/x
  3. Step 3: Cross multiply
    198,980.19x = 274,578.80 × 112,940.93
  4. Step 4: Simplify right side
    198,980.19x = 31,011,185,999.08
  5. Step 5: Solve for x
    x = 31,011,185,999.08/198,980.19
  6. Step 6: Final answer
    x = 155,850.62

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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.