Home / 100,410.37-138,565.74-55,087.23

Finding the Fourth Proportional to 100,410.37, 138,565.74 and 55,087.23

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Solution

The fourth proportional to 100,410.37, 138,565.74 and 55,087.23 is: 76,020.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,410.37 : 138,565.74 = 55,087.23 : x
  2. Step 2: Convert to fraction form
    100,410.37/138,565.74 = 55,087.23/x
  3. Step 3: Cross multiply
    100,410.37x = 138,565.74 × 55,087.23
  4. Step 4: Simplify right side
    100,410.37x = 7,633,202,789.50
  5. Step 5: Solve for x
    x = 7,633,202,789.50/100,410.37
  6. Step 6: Final answer
    x = 76,020.06

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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.