Finding the Fourth Proportional to 161,699.42, 223,145.48 and 90,081.99
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Solution
The fourth proportional to 161,699.42, 223,145.48 and 90,081.99 is: 124,313.30
Step by Step Solution
- Step 1: Write the proportion equation
161,699.42 : 223,145.48 = 90,081.99 : x - Step 2: Convert to fraction form
161,699.42/223,145.48 = 90,081.99/x - Step 3: Cross multiply
161,699.42x = 223,145.48 × 90,081.99 - Step 4: Simplify right side
161,699.42x = 20,101,389,123.11 - Step 5: Solve for x
x = 20,101,389,123.11/161,699.42 - Step 6: Final answer
x = 124,313.30
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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.