Finding the Fourth Proportional to 121,596.80, 167,755.35 and 81,246.65
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Solution
The fourth proportional to 121,596.80, 167,755.35 and 81,246.65 is: 112,088.15
Step by Step Solution
- Step 1: Write the proportion equation
121,596.80 : 167,755.35 = 81,246.65 : x - Step 2: Convert to fraction form
121,596.80/167,755.35 = 81,246.65/x - Step 3: Cross multiply
121,596.80x = 167,755.35 × 81,246.65 - Step 4: Simplify right side
121,596.80x = 13,629,559,672.98 - Step 5: Solve for x
x = 13,629,559,672.98/121,596.80 - Step 6: Final answer
x = 112,088.15
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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.