Home / 100,104.30-138,137.99-54,773.24

Finding the Fourth Proportional to 100,104.30, 138,137.99 and 54,773.24

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Solution

The fourth proportional to 100,104.30, 138,137.99 and 54,773.24 is: 75,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,104.30 : 138,137.99 = 54,773.24 : x
  2. Step 2: Convert to fraction form
    100,104.30/138,137.99 = 54,773.24/x
  3. Step 3: Cross multiply
    100,104.30x = 138,137.99 × 54,773.24
  4. Step 4: Simplify right side
    100,104.30x = 7,566,264,314.83
  5. Step 5: Solve for x
    x = 7,566,264,314.83/100,104.30
  6. Step 6: Final answer
    x = 75,583.81

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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.