Finding the Fourth Proportional to 120,330.86, 179,764.97 and 77,864.99
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Solution
The fourth proportional to 120,330.86, 179,764.97 and 77,864.99 is: 116,324.25
Step by Step Solution
- Step 1: Write the proportion equation
120,330.86 : 179,764.97 = 77,864.99 : x - Step 2: Convert to fraction form
120,330.86/179,764.97 = 77,864.99/x - Step 3: Cross multiply
120,330.86x = 179,764.97 × 77,864.99 - Step 4: Simplify right side
120,330.86x = 13,997,396,303.25 - Step 5: Solve for x
x = 13,997,396,303.25/120,330.86 - Step 6: Final answer
x = 116,324.25
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.