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Finding the Fourth Proportional to 139,306.36, 208,959.02 and 50,559.72

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Solution

The fourth proportional to 139,306.36, 208,959.02 and 50,559.72 is: 75,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,306.36 : 208,959.02 = 50,559.72 : x
  2. Step 2: Convert to fraction form
    139,306.36/208,959.02 = 50,559.72/x
  3. Step 3: Cross multiply
    139,306.36x = 208,959.02 × 50,559.72
  4. Step 4: Simplify right side
    139,306.36x = 10,564,909,542.67
  5. Step 5: Solve for x
    x = 10,564,909,542.67/139,306.36
  6. Step 6: Final answer
    x = 75,839.39

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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.