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Finding the Fourth Proportional to 139,275.80, 208,889.40 and 50,483.60

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Solution

The fourth proportional to 139,275.80, 208,889.40 and 50,483.60 is: 75,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,275.80 : 208,889.40 = 50,483.60 : x
  2. Step 2: Convert to fraction form
    139,275.80/208,889.40 = 50,483.60/x
  3. Step 3: Cross multiply
    139,275.80x = 208,889.40 × 50,483.60
  4. Step 4: Simplify right side
    139,275.80x = 10,545,488,913.84
  5. Step 5: Solve for x
    x = 10,545,488,913.84/139,275.80
  6. Step 6: Final answer
    x = 75,716.59

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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.