Finding the Fourth Proportional to 189,207.09, 261,112.01 and 108,648.95
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Solution
The fourth proportional to 189,207.09, 261,112.01 and 108,648.95 is: 149,939.12
Step by Step Solution
- Step 1: Write the proportion equation
189,207.09 : 261,112.01 = 108,648.95 : x - Step 2: Convert to fraction form
189,207.09/261,112.01 = 108,648.95/x - Step 3: Cross multiply
189,207.09x = 261,112.01 × 108,648.95 - Step 4: Simplify right side
189,207.09x = 28,369,543,870.08 - Step 5: Solve for x
x = 28,369,543,870.08/189,207.09 - Step 6: Final answer
x = 149,939.12
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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.