Finding the Fourth Proportional to 211,542.75, 291,937.64 and 122,118.75
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Solution
The fourth proportional to 211,542.75, 291,937.64 and 122,118.75 is: 168,528.87
Step by Step Solution
- Step 1: Write the proportion equation
211,542.75 : 291,937.64 = 122,118.75 : x - Step 2: Convert to fraction form
211,542.75/291,937.64 = 122,118.75/x - Step 3: Cross multiply
211,542.75x = 291,937.64 × 122,118.75 - Step 4: Simplify right side
211,542.75x = 35,651,059,674.75 - Step 5: Solve for x
x = 35,651,059,674.75/211,542.75 - Step 6: Final answer
x = 168,528.87
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.