Finding the Fourth Proportional to 149,278.20, 206,022.75 and 85,614.63
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Solution
The fourth proportional to 149,278.20, 206,022.75 and 85,614.63 is: 118,158.99
Step by Step Solution
- Step 1: Write the proportion equation
149,278.20 : 206,022.75 = 85,614.63 : x - Step 2: Convert to fraction form
149,278.20/206,022.75 = 85,614.63/x - Step 3: Cross multiply
149,278.20x = 206,022.75 × 85,614.63 - Step 4: Simplify right side
149,278.20x = 17,638,561,512.83 - Step 5: Solve for x
x = 17,638,561,512.83/149,278.20 - Step 6: Final answer
x = 118,158.99
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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.