Finding the Fourth Proportional to 258,114.75, 387,186.71 and 91,902.75
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Solution
The fourth proportional to 258,114.75, 387,186.71 and 91,902.75 is: 137,859.32
Step by Step Solution
- Step 1: Write the proportion equation
258,114.75 : 387,186.71 = 91,902.75 : x - Step 2: Convert to fraction form
258,114.75/387,186.71 = 91,902.75/x - Step 3: Cross multiply
258,114.75x = 387,186.71 × 91,902.75 - Step 4: Simplify right side
258,114.75x = 35,583,522,952.94 - Step 5: Solve for x
x = 35,583,522,952.94/258,114.75 - Step 6: Final answer
x = 137,859.32
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1.5x scale
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.