Finding the Fourth Proportional to 120,447.97, 166,296.18 and 77,446.75
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Solution
The fourth proportional to 120,447.97, 166,296.18 and 77,446.75 is: 106,926.66
Step by Step Solution
- Step 1: Write the proportion equation
120,447.97 : 166,296.18 = 77,446.75 : x - Step 2: Convert to fraction form
120,447.97/166,296.18 = 77,446.75/x - Step 3: Cross multiply
120,447.97x = 166,296.18 × 77,446.75 - Step 4: Simplify right side
120,447.97x = 12,879,098,678.42 - Step 5: Solve for x
x = 12,879,098,678.42/120,447.97 - Step 6: Final answer
x = 106,926.66
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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.