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Finding the Fourth Proportional to 139,070.52, 208,621.80 and 50,365.80

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Solution

The fourth proportional to 139,070.52, 208,621.80 and 50,365.80 is: 75,554.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,070.52 : 208,621.80 = 50,365.80 : x
  2. Step 2: Convert to fraction form
    139,070.52/208,621.80 = 50,365.80/x
  3. Step 3: Cross multiply
    139,070.52x = 208,621.80 × 50,365.80
  4. Step 4: Simplify right side
    139,070.52x = 10,507,403,854.44
  5. Step 5: Solve for x
    x = 10,507,403,854.44/139,070.52
  6. Step 6: Final answer
    x = 75,554.50

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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.