Home / 100,180.68-138,218.04-57,733.44

Finding the Fourth Proportional to 100,180.68, 138,218.04 and 57,733.44

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Solution

The fourth proportional to 100,180.68, 138,218.04 and 57,733.44 is: 79,654.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,180.68 : 138,218.04 = 57,733.44 : x
  2. Step 2: Convert to fraction form
    100,180.68/138,218.04 = 57,733.44/x
  3. Step 3: Cross multiply
    100,180.68x = 138,218.04 × 57,733.44
  4. Step 4: Simplify right side
    100,180.68x = 7,979,802,919.26
  5. Step 5: Solve for x
    x = 7,979,802,919.26/100,180.68
  6. Step 6: Final answer
    x = 79,654.11

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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.