Finding the Fourth Proportional to 122,641.14, 169,258.76 and 68,198.70
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Solution
The fourth proportional to 122,641.14, 169,258.76 and 68,198.70 is: 94,121.98
Step by Step Solution
- Step 1: Write the proportion equation
122,641.14 : 169,258.76 = 68,198.70 : x - Step 2: Convert to fraction form
122,641.14/169,258.76 = 68,198.70/x - Step 3: Cross multiply
122,641.14x = 169,258.76 × 68,198.70 - Step 4: Simplify right side
122,641.14x = 11,543,227,054.62 - Step 5: Solve for x
x = 11,543,227,054.62/122,641.14 - Step 6: Final answer
x = 94,121.98
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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.