Finding the Fourth Proportional to 206,845.70, 310,268.55 and 128,113.70
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Solution
The fourth proportional to 206,845.70, 310,268.55 and 128,113.70 is: 192,170.55
Step by Step Solution
- Step 1: Write the proportion equation
206,845.70 : 310,268.55 = 128,113.70 : x - Step 2: Convert to fraction form
206,845.70/310,268.55 = 128,113.70/x - Step 3: Cross multiply
206,845.70x = 310,268.55 × 128,113.70 - Step 4: Simplify right side
206,845.70x = 39,749,651,934.14 - Step 5: Solve for x
x = 39,749,651,934.14/206,845.70 - Step 6: Final answer
x = 192,170.55
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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.