Finding the Fourth Proportional to 131,425.79, 181,367.47 and 70,996.42
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Solution
The fourth proportional to 131,425.79, 181,367.47 and 70,996.42 is: 97,974.99
Step by Step Solution
- Step 1: Write the proportion equation
131,425.79 : 181,367.47 = 70,996.42 : x - Step 2: Convert to fraction form
131,425.79/181,367.47 = 70,996.42/x - Step 3: Cross multiply
131,425.79x = 181,367.47 × 70,996.42 - Step 4: Simplify right side
131,425.79x = 12,876,440,902.05 - Step 5: Solve for x
x = 12,876,440,902.05/131,425.79 - Step 6: Final answer
x = 97,974.99
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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.