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Finding the Fourth Proportional to 189,857.62, 262,008.76 and 104,977.72

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Solution

The fourth proportional to 189,857.62, 262,008.76 and 104,977.72 is: 144,872.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,857.62 : 262,008.76 = 104,977.72 : x
  2. Step 2: Convert to fraction form
    189,857.62/262,008.76 = 104,977.72/x
  3. Step 3: Cross multiply
    189,857.62x = 262,008.76 × 104,977.72
  4. Step 4: Simplify right side
    189,857.62x = 27,505,082,244.83
  5. Step 5: Solve for x
    x = 27,505,082,244.83/189,857.62
  6. Step 6: Final answer
    x = 144,872.15

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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.