Finding the Fourth Proportional to 136,478.52, 188,341.70 and 79,891.08
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Solution
The fourth proportional to 136,478.52, 188,341.70 and 79,891.08 is: 110,250.48
Step by Step Solution
- Step 1: Write the proportion equation
136,478.52 : 188,341.70 = 79,891.08 : x - Step 2: Convert to fraction form
136,478.52/188,341.70 = 79,891.08/x - Step 3: Cross multiply
136,478.52x = 188,341.70 × 79,891.08 - Step 4: Simplify right side
136,478.52x = 15,046,821,822.04 - Step 5: Solve for x
x = 15,046,821,822.04/136,478.52 - Step 6: Final answer
x = 110,250.48
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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.