Finding the Fourth Proportional to 191,963.19, 288,194.81 and 129,065.07
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Solution
The fourth proportional to 191,963.19, 288,194.81 and 129,065.07 is: 193,765.70
Step by Step Solution
- Step 1: Write the proportion equation
191,963.19 : 288,194.81 = 129,065.07 : x - Step 2: Convert to fraction form
191,963.19/288,194.81 = 129,065.07/x - Step 3: Cross multiply
191,963.19x = 288,194.81 × 129,065.07 - Step 4: Simplify right side
191,963.19x = 37,195,882,680.96 - Step 5: Solve for x
x = 37,195,882,680.96/191,963.19 - Step 6: Final answer
x = 193,765.70
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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.