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Finding the Fourth Proportional to 189,003.38, 260,824.56 and 104,120.44

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Solution

The fourth proportional to 189,003.38, 260,824.56 and 104,120.44 is: 143,686.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,003.38 : 260,824.56 = 104,120.44 : x
  2. Step 2: Convert to fraction form
    189,003.38/260,824.56 = 104,120.44/x
  3. Step 3: Cross multiply
    189,003.38x = 260,824.56 × 104,120.44
  4. Step 4: Simplify right side
    189,003.38x = 27,157,166,907.49
  5. Step 5: Solve for x
    x = 27,157,166,907.49/189,003.38
  6. Step 6: Final answer
    x = 143,686.15

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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.