Finding the Fourth Proportional to 149,277.20, 206,021.37 and 85,613.63
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Solution
The fourth proportional to 149,277.20, 206,021.37 and 85,613.63 is: 118,157.61
Step by Step Solution
- Step 1: Write the proportion equation
149,277.20 : 206,021.37 = 85,613.63 : x - Step 2: Convert to fraction form
149,277.20/206,021.37 = 85,613.63/x - Step 3: Cross multiply
149,277.20x = 206,021.37 × 85,613.63 - Step 4: Simplify right side
149,277.20x = 17,638,236,634.22 - Step 5: Solve for x
x = 17,638,236,634.22/149,277.20 - Step 6: Final answer
x = 118,157.61
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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.