Finding the Fourth Proportional to 129,195.66, 193,623.39 and 69,217.20
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Solution
The fourth proportional to 129,195.66, 193,623.39 and 69,217.20 is: 103,734.67
Step by Step Solution
- Step 1: Write the proportion equation
129,195.66 : 193,623.39 = 69,217.20 : x - Step 2: Convert to fraction form
129,195.66/193,623.39 = 69,217.20/x - Step 3: Cross multiply
129,195.66x = 193,623.39 × 69,217.20 - Step 4: Simplify right side
129,195.66x = 13,402,068,910.31 - Step 5: Solve for x
x = 13,402,068,910.31/129,195.66 - Step 6: Final answer
x = 103,734.67
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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.