Finding the Fourth Proportional to 128,487.14, 192,770.15 and 57,469.53
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Solution
The fourth proportional to 128,487.14, 192,770.15 and 57,469.53 is: 86,221.94
Step by Step Solution
- Step 1: Write the proportion equation
128,487.14 : 192,770.15 = 57,469.53 : x - Step 2: Convert to fraction form
128,487.14/192,770.15 = 57,469.53/x - Step 3: Cross multiply
128,487.14x = 192,770.15 × 57,469.53 - Step 4: Simplify right side
128,487.14x = 11,078,409,918.53 - Step 5: Solve for x
x = 11,078,409,918.53/128,487.14 - Step 6: Final answer
x = 86,221.94
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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.