Home / 100,454.37-138,626.60-55,133.10

Finding the Fourth Proportional to 100,454.37, 138,626.60 and 55,133.10

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Solution

The fourth proportional to 100,454.37, 138,626.60 and 55,133.10 is: 76,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,454.37 : 138,626.60 = 55,133.10 : x
  2. Step 2: Convert to fraction form
    100,454.37/138,626.60 = 55,133.10/x
  3. Step 3: Cross multiply
    100,454.37x = 138,626.60 × 55,133.10
  4. Step 4: Simplify right side
    100,454.37x = 7,642,913,507.33
  5. Step 5: Solve for x
    x = 7,642,913,507.33/100,454.37
  6. Step 6: Final answer
    x = 76,083.43

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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.