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Finding the Fourth Proportional to 189,179.50, 261,069.48 and 104,299.60

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Solution

The fourth proportional to 189,179.50, 261,069.48 and 104,299.60 is: 143,934.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,179.50 : 261,069.48 = 104,299.60 : x
  2. Step 2: Convert to fraction form
    189,179.50/261,069.48 = 104,299.60/x
  3. Step 3: Cross multiply
    189,179.50x = 261,069.48 × 104,299.60
  4. Step 4: Simplify right side
    189,179.50x = 27,229,442,336.21
  5. Step 5: Solve for x
    x = 27,229,442,336.21/189,179.50
  6. Step 6: Final answer
    x = 143,934.42

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1.5x scale

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.