Finding the Fourth Proportional to 161,475.20, 242,115.60 and 82,743.20
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Solution
The fourth proportional to 161,475.20, 242,115.60 and 82,743.20 is: 124,064.99
Step by Step Solution
- Step 1: Write the proportion equation
161,475.20 : 242,115.60 = 82,743.20 : x - Step 2: Convert to fraction form
161,475.20/242,115.60 = 82,743.20/x - Step 3: Cross multiply
161,475.20x = 242,115.60 × 82,743.20 - Step 4: Simplify right side
161,475.20x = 20,033,419,513.92 - Step 5: Solve for x
x = 20,033,419,513.92/161,475.20 - Step 6: Final answer
x = 124,064.99
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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.