Finding the Fourth Proportional to 128,242.96, 192,367.70 and 60,759.18
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Solution
The fourth proportional to 128,242.96, 192,367.70 and 60,759.18 is: 91,140.32
Step by Step Solution
- Step 1: Write the proportion equation
128,242.96 : 192,367.70 = 60,759.18 : x - Step 2: Convert to fraction form
128,242.96/192,367.70 = 60,759.18/x - Step 3: Cross multiply
128,242.96x = 192,367.70 × 60,759.18 - Step 4: Simplify right side
128,242.96x = 11,688,103,634.54 - Step 5: Solve for x
x = 11,688,103,634.54/128,242.96 - Step 6: Final answer
x = 91,140.32
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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.