Finding the Fourth Proportional to 157,054.26, 216,738.39 and 85,438.14
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Solution
The fourth proportional to 157,054.26, 216,738.39 and 85,438.14 is: 117,906.54
Step by Step Solution
- Step 1: Write the proportion equation
157,054.26 : 216,738.39 = 85,438.14 : x - Step 2: Convert to fraction form
157,054.26/216,738.39 = 85,438.14/x - Step 3: Cross multiply
157,054.26x = 216,738.39 × 85,438.14 - Step 4: Simplify right side
157,054.26x = 18,517,724,908.19 - Step 5: Solve for x
x = 18,517,724,908.19/157,054.26 - Step 6: Final answer
x = 117,906.54
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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.