Finding the Fourth Proportional to 133,245.76, 183,879.64 and 72,816.44
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Solution
The fourth proportional to 133,245.76, 183,879.64 and 72,816.44 is: 100,486.96
Step by Step Solution
- Step 1: Write the proportion equation
133,245.76 : 183,879.64 = 72,816.44 : x - Step 2: Convert to fraction form
133,245.76/183,879.64 = 72,816.44/x - Step 3: Cross multiply
133,245.76x = 183,879.64 × 72,816.44 - Step 4: Simplify right side
133,245.76x = 13,389,460,773.28 - Step 5: Solve for x
x = 13,389,460,773.28/133,245.76 - Step 6: Final answer
x = 100,486.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.