Finding the Fourth Proportional to 120,759.12, 181,212.39 and 76,324.68
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Solution
The fourth proportional to 120,759.12, 181,212.39 and 76,324.68 is: 114,533.61
Step by Step Solution
- Step 1: Write the proportion equation
120,759.12 : 181,212.39 = 76,324.68 : x - Step 2: Convert to fraction form
120,759.12/181,212.39 = 76,324.68/x - Step 3: Cross multiply
120,759.12x = 181,212.39 × 76,324.68 - Step 4: Simplify right side
120,759.12x = 13,830,977,678.79 - Step 5: Solve for x
x = 13,830,977,678.79/120,759.12 - Step 6: Final answer
x = 114,533.61
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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.