Finding the Fourth Proportional to 107,811.20, 161,695.20 and 51,651.20
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Solution
The fourth proportional to 107,811.20, 161,695.20 and 51,651.20 is: 77,466.45
Step by Step Solution
- Step 1: Write the proportion equation
107,811.20 : 161,695.20 = 51,651.20 : x - Step 2: Convert to fraction form
107,811.20/161,695.20 = 51,651.20/x - Step 3: Cross multiply
107,811.20x = 161,695.20 × 51,651.20 - Step 4: Simplify right side
107,811.20x = 8,351,751,114.24 - Step 5: Solve for x
x = 8,351,751,114.24/107,811.20 - Step 6: Final answer
x = 77,466.45
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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.