Home / 198,518.78-274,098.94-122,140.64

Finding the Fourth Proportional to 198,518.78, 274,098.94 and 122,140.64

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Solution

The fourth proportional to 198,518.78, 274,098.94 and 122,140.64 is: 168,642.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,518.78 : 274,098.94 = 122,140.64 : x
  2. Step 2: Convert to fraction form
    198,518.78/274,098.94 = 122,140.64/x
  3. Step 3: Cross multiply
    198,518.78x = 274,098.94 × 122,140.64
  4. Step 4: Simplify right side
    198,518.78x = 33,478,619,954.92
  5. Step 5: Solve for x
    x = 33,478,619,954.92/198,518.78
  6. Step 6: Final answer
    x = 168,642.08

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1.5x scale

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.