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Finding the Fourth Proportional to 139,069.85, 208,535.76 and 44,287.68

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Solution

The fourth proportional to 139,069.85, 208,535.76 and 44,287.68 is: 66,409.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,069.85 : 208,535.76 = 44,287.68 : x
  2. Step 2: Convert to fraction form
    139,069.85/208,535.76 = 44,287.68/x
  3. Step 3: Cross multiply
    139,069.85x = 208,535.76 × 44,287.68
  4. Step 4: Simplify right side
    139,069.85x = 9,235,564,786.00
  5. Step 5: Solve for x
    x = 9,235,564,786.00/139,069.85
  6. Step 6: Final answer
    x = 66,409.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.