Home / 135,457.36-203,310.74-68,945

Finding the Fourth Proportional to 135,457.36, 203,310.74 and 68,945

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Solution

The fourth proportional to 135,457.36, 203,310.74 and 68,945 is: 103,480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,457.36 : 203,310.74 = 68,945 : x
  2. Step 2: Convert to fraction form
    135,457.36/203,310.74 = 68,945/x
  3. Step 3: Cross multiply
    135,457.36x = 203,310.74 × 68,945
  4. Step 4: Simplify right side
    135,457.36x = 14,017,258,969.30
  5. Step 5: Solve for x
    x = 14,017,258,969.30/135,457.36
  6. Step 6: Final answer
    x = 103,480.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.