Home / 100,284.31-138,393.41-54,961.29

Finding the Fourth Proportional to 100,284.31, 138,393.41 and 54,961.29

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Solution

The fourth proportional to 100,284.31, 138,393.41 and 54,961.29 is: 75,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,284.31 : 138,393.41 = 54,961.29 : x
  2. Step 2: Convert to fraction form
    100,284.31/138,393.41 = 54,961.29/x
  3. Step 3: Cross multiply
    100,284.31x = 138,393.41 × 54,961.29
  4. Step 4: Simplify right side
    100,284.31x = 7,606,280,066.29
  5. Step 5: Solve for x
    x = 7,606,280,066.29/100,284.31
  6. Step 6: Final answer
    x = 75,847.16

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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.