Finding the Fourth Proportional to 189,773.51, 261,882.87 and 103,728.62
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Solution
The fourth proportional to 189,773.51, 261,882.87 and 103,728.62 is: 143,142.99
Step by Step Solution
- Step 1: Write the proportion equation
189,773.51 : 261,882.87 = 103,728.62 : x - Step 2: Convert to fraction form
189,773.51/261,882.87 = 103,728.62/x - Step 3: Cross multiply
189,773.51x = 261,882.87 × 103,728.62 - Step 4: Simplify right side
189,773.51x = 27,164,747,397.33 - Step 5: Solve for x
x = 27,164,747,397.33/189,773.51 - Step 6: Final answer
x = 143,142.99
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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.