Finding the Fourth Proportional to 138,327.91, 189,648.29 and 135,806.02
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Solution
The fourth proportional to 138,327.91, 189,648.29 and 135,806.02 is: 186,190.77
Step by Step Solution
- Step 1: Write the proportion equation
138,327.91 : 189,648.29 = 135,806.02 : x - Step 2: Convert to fraction form
138,327.91/189,648.29 = 135,806.02/x - Step 3: Cross multiply
138,327.91x = 189,648.29 × 135,806.02 - Step 4: Simplify right side
138,327.91x = 25,755,379,330.10 - Step 5: Solve for x
x = 25,755,379,330.10/138,327.91 - Step 6: Final answer
x = 186,190.77
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.