Finding the Fourth Proportional to 128,399.85, 192,562.11 and 48,380.09
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Solution
The fourth proportional to 128,399.85, 192,562.11 and 48,380.09 is: 72,555.94
Step by Step Solution
- Step 1: Write the proportion equation
128,399.85 : 192,562.11 = 48,380.09 : x - Step 2: Convert to fraction form
128,399.85/192,562.11 = 48,380.09/x - Step 3: Cross multiply
128,399.85x = 192,562.11 × 48,380.09 - Step 4: Simplify right side
128,399.85x = 9,316,171,249.58 - Step 5: Solve for x
x = 9,316,171,249.58/128,399.85 - Step 6: Final answer
x = 72,555.94
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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.