Finding the Fourth Proportional to 122,040.81, 168,408.18 and 68,316.75
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Solution
The fourth proportional to 122,040.81, 168,408.18 and 68,316.75 is: 94,272.56
Step by Step Solution
- Step 1: Write the proportion equation
122,040.81 : 168,408.18 = 68,316.75 : x - Step 2: Convert to fraction form
122,040.81/168,408.18 = 68,316.75/x - Step 3: Cross multiply
122,040.81x = 168,408.18 × 68,316.75 - Step 4: Simplify right side
122,040.81x = 11,505,099,531.02 - Step 5: Solve for x
x = 11,505,099,531.02/122,040.81 - Step 6: Final answer
x = 94,272.56
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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.