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Finding the Fourth Proportional to 139,289.76, 208,935.12 and 44,524.08

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Solution

The fourth proportional to 139,289.76, 208,935.12 and 44,524.08 is: 66,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,289.76 : 208,935.12 = 44,524.08 : x
  2. Step 2: Convert to fraction form
    139,289.76/208,935.12 = 44,524.08/x
  3. Step 3: Cross multiply
    139,289.76x = 208,935.12 × 44,524.08
  4. Step 4: Simplify right side
    139,289.76x = 9,302,643,997.69
  5. Step 5: Solve for x
    x = 9,302,643,997.69/139,289.76
  6. Step 6: Final answer
    x = 66,786.27

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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.