Finding the Fourth Proportional to 129,691.44, 194,367.62 and 66,457.98
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Solution
The fourth proportional to 129,691.44, 194,367.62 and 66,457.98 is: 99,600.09
Step by Step Solution
- Step 1: Write the proportion equation
129,691.44 : 194,367.62 = 66,457.98 : x - Step 2: Convert to fraction form
129,691.44/194,367.62 = 66,457.98/x - Step 3: Cross multiply
129,691.44x = 194,367.62 × 66,457.98 - Step 4: Simplify right side
129,691.44x = 12,917,279,402.61 - Step 5: Solve for x
x = 12,917,279,402.61/129,691.44 - Step 6: Final answer
x = 99,600.09
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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.