Finding the Fourth Proportional to 122,028.78, 168,380.34 and 68,316.06
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Solution
The fourth proportional to 122,028.78, 168,380.34 and 68,316.06 is: 94,265.32
Step by Step Solution
- Step 1: Write the proportion equation
122,028.78 : 168,380.34 = 68,316.06 : x - Step 2: Convert to fraction form
122,028.78/168,380.34 = 68,316.06/x - Step 3: Cross multiply
122,028.78x = 168,380.34 × 68,316.06 - Step 4: Simplify right side
122,028.78x = 11,503,081,410.26 - Step 5: Solve for x
x = 11,503,081,410.26/122,028.78 - Step 6: Final answer
x = 94,265.32
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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.