Finding the Fourth Proportional to 128,409.64, 192,564.88 and 44,153.88
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Solution
The fourth proportional to 128,409.64, 192,564.88 and 44,153.88 is: 66,213.77
Step by Step Solution
- Step 1: Write the proportion equation
128,409.64 : 192,564.88 = 44,153.88 : x - Step 2: Convert to fraction form
128,409.64/192,564.88 = 44,153.88/x - Step 3: Cross multiply
128,409.64x = 192,564.88 × 44,153.88 - Step 4: Simplify right side
128,409.64x = 8,502,486,603.73 - Step 5: Solve for x
x = 8,502,486,603.73/128,409.64 - Step 6: Final answer
x = 66,213.77
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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.