Finding the Fourth Proportional to 189,411.93, 261,394.74 and 103,375.62
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Solution
The fourth proportional to 189,411.93, 261,394.74 and 103,375.62 is: 142,661.78
Step by Step Solution
- Step 1: Write the proportion equation
189,411.93 : 261,394.74 = 103,375.62 : x - Step 2: Convert to fraction form
189,411.93/261,394.74 = 103,375.62/x - Step 3: Cross multiply
189,411.93x = 261,394.74 × 103,375.62 - Step 4: Simplify right side
189,411.93x = 27,021,843,312.24 - Step 5: Solve for x
x = 27,021,843,312.24/189,411.93 - Step 6: Final answer
x = 142,661.78
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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.