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Finding the Fourth Proportional to 139,120.52, 208,628.40 and 50,352.08

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Solution

The fourth proportional to 139,120.52, 208,628.40 and 50,352.08 is: 75,509.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,120.52 : 208,628.40 = 50,352.08 : x
  2. Step 2: Convert to fraction form
    139,120.52/208,628.40 = 50,352.08/x
  3. Step 3: Cross multiply
    139,120.52x = 208,628.40 × 50,352.08
  4. Step 4: Simplify right side
    139,120.52x = 10,504,873,887.07
  5. Step 5: Solve for x
    x = 10,504,873,887.07/139,120.52
  6. Step 6: Final answer
    x = 75,509.16

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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.