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Finding the Fourth Proportional to 189,729.78, 261,827.01 and 104,846.10

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Solution

The fourth proportional to 189,729.78, 261,827.01 and 104,846.10 is: 144,687.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,729.78 : 261,827.01 = 104,846.10 : x
  2. Step 2: Convert to fraction form
    189,729.78/261,827.01 = 104,846.10/x
  3. Step 3: Cross multiply
    189,729.78x = 261,827.01 × 104,846.10
  4. Step 4: Simplify right side
    189,729.78x = 27,451,540,873.16
  5. Step 5: Solve for x
    x = 27,451,540,873.16/189,729.78
  6. Step 6: Final answer
    x = 144,687.57

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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.