Finding the Fourth Proportional to 122,089.05, 168,474.87 and 68,361.75
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Solution
The fourth proportional to 122,089.05, 168,474.87 and 68,361.75 is: 94,334.72
Step by Step Solution
- Step 1: Write the proportion equation
122,089.05 : 168,474.87 = 68,361.75 : x - Step 2: Convert to fraction form
122,089.05/168,474.87 = 68,361.75/x - Step 3: Cross multiply
122,089.05x = 168,474.87 × 68,361.75 - Step 4: Simplify right side
122,089.05x = 11,517,236,944.22 - Step 5: Solve for x
x = 11,517,236,944.22/122,089.05 - Step 6: Final answer
x = 94,334.72
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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.