Home / 121,087.56-167,106.24-100,910.64

Finding the Fourth Proportional to 121,087.56, 167,106.24 and 100,910.64

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Solution

The fourth proportional to 121,087.56, 167,106.24 and 100,910.64 is: 139,261.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,087.56 : 167,106.24 = 100,910.64 : x
  2. Step 2: Convert to fraction form
    121,087.56/167,106.24 = 100,910.64/x
  3. Step 3: Cross multiply
    121,087.56x = 167,106.24 × 100,910.64
  4. Step 4: Simplify right side
    121,087.56x = 16,862,797,626.39
  5. Step 5: Solve for x
    x = 16,862,797,626.39/121,087.56
  6. Step 6: Final answer
    x = 139,261.19

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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.