Finding the Fourth Proportional to 189,362.70, 261,348.84 and 121,456.26
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Solution
The fourth proportional to 189,362.70, 261,348.84 and 121,456.26 is: 167,627.80
Step by Step Solution
- Step 1: Write the proportion equation
189,362.70 : 261,348.84 = 121,456.26 : x - Step 2: Convert to fraction form
189,362.70/261,348.84 = 121,456.26/x - Step 3: Cross multiply
189,362.70x = 261,348.84 × 121,456.26 - Step 4: Simplify right side
189,362.70x = 31,742,452,661.74 - Step 5: Solve for x
x = 31,742,452,661.74/189,362.70 - Step 6: Final answer
x = 167,627.80
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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.