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Finding the Fourth Proportional to 169,993.60, 255,028.80 and 99,836.80

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Solution

The fourth proportional to 169,993.60, 255,028.80 and 99,836.80 is: 149,777.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,993.60 : 255,028.80 = 99,836.80 : x
  2. Step 2: Convert to fraction form
    169,993.60/255,028.80 = 99,836.80/x
  3. Step 3: Cross multiply
    169,993.60x = 255,028.80 × 99,836.80
  4. Step 4: Simplify right side
    169,993.60x = 25,461,259,299.84
  5. Step 5: Solve for x
    x = 25,461,259,299.84/169,993.60
  6. Step 6: Final answer
    x = 149,777.75

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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.