Finding the Fourth Proportional to 189,437.28, 261,187.02 and 121,342.26
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Solution
The fourth proportional to 189,437.28, 261,187.02 and 121,342.26 is: 167,300.88
Step by Step Solution
- Step 1: Write the proportion equation
189,437.28 : 261,187.02 = 121,342.26 : x - Step 2: Convert to fraction form
189,437.28/261,187.02 = 121,342.26/x - Step 3: Cross multiply
189,437.28x = 261,187.02 × 121,342.26 - Step 4: Simplify right side
189,437.28x = 31,693,023,289.47 - Step 5: Solve for x
x = 31,693,023,289.47/189,437.28 - Step 6: Final answer
x = 167,300.88
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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.