Finding the Fourth Proportional to 117,257.44, 161,603.76 and 85,375.84
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Solution
The fourth proportional to 117,257.44, 161,603.76 and 85,375.84 is: 117,664.66
Step by Step Solution
- Step 1: Write the proportion equation
117,257.44 : 161,603.76 = 85,375.84 : x - Step 2: Convert to fraction form
117,257.44/161,603.76 = 85,375.84/x - Step 3: Cross multiply
117,257.44x = 161,603.76 × 85,375.84 - Step 4: Simplify right side
117,257.44x = 13,797,056,757.16 - Step 5: Solve for x
x = 13,797,056,757.16/117,257.44 - Step 6: Final answer
x = 117,664.66
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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.