Home / 100,138.49-138,181.66-59,844.23

Finding the Fourth Proportional to 100,138.49, 138,181.66 and 59,844.23

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Solution

The fourth proportional to 100,138.49, 138,181.66 and 59,844.23 is: 82,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,138.49 : 138,181.66 = 59,844.23 : x
  2. Step 2: Convert to fraction form
    100,138.49/138,181.66 = 59,844.23/x
  3. Step 3: Cross multiply
    100,138.49x = 138,181.66 × 59,844.23
  4. Step 4: Simplify right side
    100,138.49x = 8,269,375,042.82
  5. Step 5: Solve for x
    x = 8,269,375,042.82/100,138.49
  6. Step 6: Final answer
    x = 82,579.39

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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.