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Finding the Fourth Proportional to 100,644.48, 138,866.40 and 58,195.44

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Solution

The fourth proportional to 100,644.48, 138,866.40 and 58,195.44 is: 80,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,644.48 : 138,866.40 = 58,195.44 : x
  2. Step 2: Convert to fraction form
    100,644.48/138,866.40 = 58,195.44/x
  3. Step 3: Cross multiply
    100,644.48x = 138,866.40 × 58,195.44
  4. Step 4: Simplify right side
    100,644.48x = 8,081,391,249.22
  5. Step 5: Solve for x
    x = 8,081,391,249.22/100,644.48
  6. Step 6: Final answer
    x = 80,296.42

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1.5x scale

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.