Home / 193,561.20-290,428.20-68,991.60

Finding the Fourth Proportional to 193,561.20, 290,428.20 and 68,991.60

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Solution

The fourth proportional to 193,561.20, 290,428.20 and 68,991.60 is: 103,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,561.20 : 290,428.20 = 68,991.60 : x
  2. Step 2: Convert to fraction form
    193,561.20/290,428.20 = 68,991.60/x
  3. Step 3: Cross multiply
    193,561.20x = 290,428.20 × 68,991.60
  4. Step 4: Simplify right side
    193,561.20x = 20,037,106,203.12
  5. Step 5: Solve for x
    x = 20,037,106,203.12/193,561.20
  6. Step 6: Final answer
    x = 103,518.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.