Finding the Fourth Proportional to 158,254.79, 218,391.25 and 86,634.19
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Solution
The fourth proportional to 158,254.79, 218,391.25 and 86,634.19 is: 119,554.98
Step by Step Solution
- Step 1: Write the proportion equation
158,254.79 : 218,391.25 = 86,634.19 : x - Step 2: Convert to fraction form
158,254.79/218,391.25 = 86,634.19/x - Step 3: Cross multiply
158,254.79x = 218,391.25 × 86,634.19 - Step 4: Simplify right side
158,254.79x = 18,920,147,793.57 - Step 5: Solve for x
x = 18,920,147,793.57/158,254.79 - Step 6: Final answer
x = 119,554.98
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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.