Finding the Fourth Proportional to 131,817.23, 181,925.87 and 80,820.94
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Solution
The fourth proportional to 131,817.23, 181,925.87 and 80,820.94 is: 111,543.99
Step by Step Solution
- Step 1: Write the proportion equation
131,817.23 : 181,925.87 = 80,820.94 : x - Step 2: Convert to fraction form
131,817.23/181,925.87 = 80,820.94/x - Step 3: Cross multiply
131,817.23x = 181,925.87 × 80,820.94 - Step 4: Simplify right side
131,817.23x = 14,703,419,823.72 - Step 5: Solve for x
x = 14,703,419,823.72/131,817.23 - Step 6: Final answer
x = 111,543.99
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1.5x scale
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.