Home / 100,003.82-138,040.02-57,579.26

Finding the Fourth Proportional to 100,003.82, 138,040.02 and 57,579.26

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Solution

The fourth proportional to 100,003.82, 138,040.02 and 57,579.26 is: 79,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,003.82 : 138,040.02 = 57,579.26 : x
  2. Step 2: Convert to fraction form
    100,003.82/138,040.02 = 57,579.26/x
  3. Step 3: Cross multiply
    100,003.82x = 138,040.02 × 57,579.26
  4. Step 4: Simplify right side
    100,003.82x = 7,948,241,511.79
  5. Step 5: Solve for x
    x = 7,948,241,511.79/100,003.82
  6. Step 6: Final answer
    x = 79,479.38

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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.