Finding the Fourth Proportional to 158,394.40, 218,588.18 and 86,774.60
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Solution
The fourth proportional to 158,394.40, 218,588.18 and 86,774.60 is: 119,751.09
Step by Step Solution
- Step 1: Write the proportion equation
158,394.40 : 218,588.18 = 86,774.60 : x - Step 2: Convert to fraction form
158,394.40/218,588.18 = 86,774.60/x - Step 3: Cross multiply
158,394.40x = 218,588.18 × 86,774.60 - Step 4: Simplify right side
158,394.40x = 18,967,901,884.23 - Step 5: Solve for x
x = 18,967,901,884.23/158,394.40 - Step 6: Final answer
x = 119,751.09
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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.