Finding the Fourth Proportional to 136,882.09, 188,886.49 and 76,447.99
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Solution
The fourth proportional to 136,882.09, 188,886.49 and 76,447.99 is: 105,492.20
Step by Step Solution
- Step 1: Write the proportion equation
136,882.09 : 188,886.49 = 76,447.99 : x - Step 2: Convert to fraction form
136,882.09/188,886.49 = 76,447.99/x - Step 3: Cross multiply
136,882.09x = 188,886.49 × 76,447.99 - Step 4: Simplify right side
136,882.09x = 14,439,992,498.66 - Step 5: Solve for x
x = 14,439,992,498.66/136,882.09 - Step 6: Final answer
x = 105,492.20
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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.