Finding the Fourth Proportional to 158,523.68, 218,771.06 and 86,906.72
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Solution
The fourth proportional to 158,523.68, 218,771.06 and 86,906.72 is: 119,935.86
Step by Step Solution
- Step 1: Write the proportion equation
158,523.68 : 218,771.06 = 86,906.72 : x - Step 2: Convert to fraction form
158,523.68/218,771.06 = 86,906.72/x - Step 3: Cross multiply
158,523.68x = 218,771.06 × 86,906.72 - Step 4: Simplify right side
158,523.68x = 19,012,673,727.13 - Step 5: Solve for x
x = 19,012,673,727.13/158,523.68 - Step 6: Final answer
x = 119,935.86
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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.