Finding the Fourth Proportional to 135,299.43, 202,605.84 and 81,230.45
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Solution
The fourth proportional to 135,299.43, 202,605.84 and 81,230.45 is: 121,639.56
Step by Step Solution
- Step 1: Write the proportion equation
135,299.43 : 202,605.84 = 81,230.45 : x - Step 2: Convert to fraction form
135,299.43/202,605.84 = 81,230.45/x - Step 3: Cross multiply
135,299.43x = 202,605.84 × 81,230.45 - Step 4: Simplify right side
135,299.43x = 16,457,762,542.80 - Step 5: Solve for x
x = 16,457,762,542.80/135,299.43 - Step 6: Final answer
x = 121,639.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.