Finding the Fourth Proportional to 120,661.23, 180,961.47 and 49,603.68
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Solution
The fourth proportional to 120,661.23, 180,961.47 and 49,603.68 is: 74,393.03
Step by Step Solution
- Step 1: Write the proportion equation
120,661.23 : 180,961.47 = 49,603.68 : x - Step 2: Convert to fraction form
120,661.23/180,961.47 = 49,603.68/x - Step 3: Cross multiply
120,661.23x = 180,961.47 × 49,603.68 - Step 4: Simplify right side
120,661.23x = 8,976,354,850.21 - Step 5: Solve for x
x = 8,976,354,850.21/120,661.23 - Step 6: Final answer
x = 74,393.03
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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.