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Finding the Fourth Proportional to 189,079.82, 260,928.90 and 104,196.95

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Solution

The fourth proportional to 189,079.82, 260,928.90 and 104,196.95 is: 143,791.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,079.82 : 260,928.90 = 104,196.95 : x
  2. Step 2: Convert to fraction form
    189,079.82/260,928.90 = 104,196.95/x
  3. Step 3: Cross multiply
    189,079.82x = 260,928.90 × 104,196.95
  4. Step 4: Simplify right side
    189,079.82x = 27,187,995,546.86
  5. Step 5: Solve for x
    x = 27,187,995,546.86/189,079.82
  6. Step 6: Final answer
    x = 143,791.10

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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.