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Finding the Fourth Proportional to 100,844.52, 139,213.26 and 58,387.56

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Solution

The fourth proportional to 100,844.52, 139,213.26 and 58,387.56 is: 80,602.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,844.52 : 139,213.26 = 58,387.56 : x
  2. Step 2: Convert to fraction form
    100,844.52/139,213.26 = 58,387.56/x
  3. Step 3: Cross multiply
    100,844.52x = 139,213.26 × 58,387.56
  4. Step 4: Simplify right side
    100,844.52x = 8,128,322,571.05
  5. Step 5: Solve for x
    x = 8,128,322,571.05/100,844.52
  6. Step 6: Final answer
    x = 80,602.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.