Finding the Fourth Proportional to 149,943.13, 206,917.68 and 81,960.28
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Solution
The fourth proportional to 149,943.13, 206,917.68 and 81,960.28 is: 113,103.09
Step by Step Solution
- Step 1: Write the proportion equation
149,943.13 : 206,917.68 = 81,960.28 : x - Step 2: Convert to fraction form
149,943.13/206,917.68 = 81,960.28/x - Step 3: Cross multiply
149,943.13x = 206,917.68 × 81,960.28 - Step 4: Simplify right side
149,943.13x = 16,959,030,989.75 - Step 5: Solve for x
x = 16,959,030,989.75/149,943.13 - Step 6: Final answer
x = 113,103.09
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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.