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Finding the Fourth Proportional to 189,799.02, 261,912.42 and 104,911.02

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Solution

The fourth proportional to 189,799.02, 261,912.42 and 104,911.02 is: 144,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,799.02 : 261,912.42 = 104,911.02 : x
  2. Step 2: Convert to fraction form
    189,799.02/261,912.42 = 104,911.02/x
  3. Step 3: Cross multiply
    189,799.02x = 261,912.42 × 104,911.02
  4. Step 4: Simplify right side
    189,799.02x = 27,477,499,132.87
  5. Step 5: Solve for x
    x = 27,477,499,132.87/189,799.02
  6. Step 6: Final answer
    x = 144,771.55

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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.