Finding the Fourth Proportional to 135,489.74, 202,410.48 and 87,715.62
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Solution
The fourth proportional to 135,489.74, 202,410.48 and 87,715.62 is: 131,039.90
Step by Step Solution
- Step 1: Write the proportion equation
135,489.74 : 202,410.48 = 87,715.62 : x - Step 2: Convert to fraction form
135,489.74/202,410.48 = 87,715.62/x - Step 3: Cross multiply
135,489.74x = 202,410.48 × 87,715.62 - Step 4: Simplify right side
135,489.74x = 17,754,560,747.70 - Step 5: Solve for x
x = 17,754,560,747.70/135,489.74 - Step 6: Final answer
x = 131,039.90
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.