Finding the Fourth Proportional to 133,245.42, 183,879.17 and 72,816.99
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Solution
The fourth proportional to 133,245.42, 183,879.17 and 72,816.99 is: 100,487.71
Step by Step Solution
- Step 1: Write the proportion equation
133,245.42 : 183,879.17 = 72,816.99 : x - Step 2: Convert to fraction form
133,245.42/183,879.17 = 72,816.99/x - Step 3: Cross multiply
133,245.42x = 183,879.17 × 72,816.99 - Step 4: Simplify right side
133,245.42x = 13,389,527,778.71 - Step 5: Solve for x
x = 13,389,527,778.71/133,245.42 - Step 6: Final answer
x = 100,487.71
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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.