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Finding the Fourth Proportional to 139,297.70, 208,976.56 and 43,232.91

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Solution

The fourth proportional to 139,297.70, 208,976.56 and 43,232.91 is: 64,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,297.70 : 208,976.56 = 43,232.91 : x
  2. Step 2: Convert to fraction form
    139,297.70/208,976.56 = 43,232.91/x
  3. Step 3: Cross multiply
    139,297.70x = 208,976.56 × 43,232.91
  4. Step 4: Simplify right side
    139,297.70x = 9,034,665,682.08
  5. Step 5: Solve for x
    x = 9,034,665,682.08/139,297.70
  6. Step 6: Final answer
    x = 64,858.69

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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.