Finding the Fourth Proportional to 208,121.09, 287,207.09 and 112,627.79
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Solution
The fourth proportional to 208,121.09, 287,207.09 and 112,627.79 is: 155,426.34
Step by Step Solution
- Step 1: Write the proportion equation
208,121.09 : 287,207.09 = 112,627.79 : x - Step 2: Convert to fraction form
208,121.09/287,207.09 = 112,627.79/x - Step 3: Cross multiply
208,121.09x = 287,207.09 × 112,627.79 - Step 4: Simplify right side
208,121.09x = 32,347,499,819.03 - Step 5: Solve for x
x = 32,347,499,819.03/208,121.09 - Step 6: Final answer
x = 155,426.34
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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.