Finding the Fourth Proportional to 206,434.14, 309,730.08 and 80,163.03
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Solution
The fourth proportional to 206,434.14, 309,730.08 and 80,163.03 is: 120,275.17
Step by Step Solution
- Step 1: Write the proportion equation
206,434.14 : 309,730.08 = 80,163.03 : x - Step 2: Convert to fraction form
206,434.14/309,730.08 = 80,163.03/x - Step 3: Cross multiply
206,434.14x = 309,730.08 × 80,163.03 - Step 4: Simplify right side
206,434.14x = 24,828,901,694.94 - Step 5: Solve for x
x = 24,828,901,694.94/206,434.14 - Step 6: Final answer
x = 120,275.17
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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.