Finding the Fourth Proportional to 129,113.09, 193,680.79 and 35,618.84
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Solution
The fourth proportional to 129,113.09, 193,680.79 and 35,618.84 is: 53,431.33
Step by Step Solution
- Step 1: Write the proportion equation
129,113.09 : 193,680.79 = 35,618.84 : x - Step 2: Convert to fraction form
129,113.09/193,680.79 = 35,618.84/x - Step 3: Cross multiply
129,113.09x = 193,680.79 × 35,618.84 - Step 4: Simplify right side
129,113.09x = 6,898,684,344.48 - Step 5: Solve for x
x = 6,898,684,344.48/129,113.09 - Step 6: Final answer
x = 53,431.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.