Home / 100,138.62-138,181.84-59,844.36

Finding the Fourth Proportional to 100,138.62, 138,181.84 and 59,844.36

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Solution

The fourth proportional to 100,138.62, 138,181.84 and 59,844.36 is: 82,579.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,138.62 : 138,181.84 = 59,844.36 : x
  2. Step 2: Convert to fraction form
    100,138.62/138,181.84 = 59,844.36/x
  3. Step 3: Cross multiply
    100,138.62x = 138,181.84 × 59,844.36
  4. Step 4: Simplify right side
    100,138.62x = 8,269,403,778.42
  5. Step 5: Solve for x
    x = 8,269,403,778.42/100,138.62
  6. Step 6: Final answer
    x = 82,579.57

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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.