Finding the Fourth Proportional to 158,071.26, 218,138.49 and 86,451.06
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Solution
The fourth proportional to 158,071.26, 218,138.49 and 86,451.06 is: 119,302.55
Step by Step Solution
- Step 1: Write the proportion equation
158,071.26 : 218,138.49 = 86,451.06 : x - Step 2: Convert to fraction form
158,071.26/218,138.49 = 86,451.06/x - Step 3: Cross multiply
158,071.26x = 218,138.49 × 86,451.06 - Step 4: Simplify right side
158,071.26x = 18,858,303,687.30 - Step 5: Solve for x
x = 18,858,303,687.30/158,071.26 - Step 6: Final answer
x = 119,302.55
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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.