Finding the Fourth Proportional to 158,362.63, 218,540.52 and 86,743.84
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Solution
The fourth proportional to 158,362.63, 218,540.52 and 86,743.84 is: 119,706.55
Step by Step Solution
- Step 1: Write the proportion equation
158,362.63 : 218,540.52 = 86,743.84 : x - Step 2: Convert to fraction form
158,362.63/218,540.52 = 86,743.84/x - Step 3: Cross multiply
158,362.63x = 218,540.52 × 86,743.84 - Step 4: Simplify right side
158,362.63x = 18,957,043,900.40 - Step 5: Solve for x
x = 18,957,043,900.40/158,362.63 - Step 6: Final answer
x = 119,706.55
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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.