Finding the Fourth Proportional to 107,965.36, 149,174.94 and 77,690.80
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Solution
The fourth proportional to 107,965.36, 149,174.94 and 77,690.80 is: 107,344.80
Step by Step Solution
- Step 1: Write the proportion equation
107,965.36 : 149,174.94 = 77,690.80 : x - Step 2: Convert to fraction form
107,965.36/149,174.94 = 77,690.80/x - Step 3: Cross multiply
107,965.36x = 149,174.94 × 77,690.80 - Step 4: Simplify right side
107,965.36x = 11,589,520,428.55 - Step 5: Solve for x
x = 11,589,520,428.55/107,965.36 - Step 6: Final answer
x = 107,344.80
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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.