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Finding the Fourth Proportional to 189,861, 262,008.62 and 103,825.56

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Solution

The fourth proportional to 189,861, 262,008.62 and 103,825.56 is: 143,279.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,861 : 262,008.62 = 103,825.56 : x
  2. Step 2: Convert to fraction form
    189,861/262,008.62 = 103,825.56/x
  3. Step 3: Cross multiply
    189,861x = 262,008.62 × 103,825.56
  4. Step 4: Simplify right side
    189,861x = 27,203,191,696.33
  5. Step 5: Solve for x
    x = 27,203,191,696.33/189,861
  6. Step 6: Final answer
    x = 143,279.51

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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.