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Finding the Fourth Proportional to 139,044.51, 208,582.97 and 50,339.79

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Solution

The fourth proportional to 139,044.51, 208,582.97 and 50,339.79 is: 75,515.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,044.51 : 208,582.97 = 50,339.79 : x
  2. Step 2: Convert to fraction form
    139,044.51/208,582.97 = 50,339.79/x
  3. Step 3: Cross multiply
    139,044.51x = 208,582.97 × 50,339.79
  4. Step 4: Simplify right side
    139,044.51x = 10,500,022,655.68
  5. Step 5: Solve for x
    x = 10,500,022,655.68/139,044.51
  6. Step 6: Final answer
    x = 75,515.55

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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.