Finding the Fourth Proportional to 122,640.39, 169,257.72 and 68,197.95
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Solution
The fourth proportional to 122,640.39, 169,257.72 and 68,197.95 is: 94,120.95
Step by Step Solution
- Step 1: Write the proportion equation
122,640.39 : 169,257.72 = 68,197.95 : x - Step 2: Convert to fraction form
122,640.39/169,257.72 = 68,197.95/x - Step 3: Cross multiply
122,640.39x = 169,257.72 × 68,197.95 - Step 4: Simplify right side
122,640.39x = 11,543,029,525.67 - Step 5: Solve for x
x = 11,543,029,525.67/122,640.39 - Step 6: Final answer
x = 94,120.95
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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.