Finding the Fourth Proportional to 189,365.70, 261,352.98 and 121,459.26
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Solution
The fourth proportional to 189,365.70, 261,352.98 and 121,459.26 is: 167,631.94
Step by Step Solution
- Step 1: Write the proportion equation
189,365.70 : 261,352.98 = 121,459.26 : x - Step 2: Convert to fraction form
189,365.70/261,352.98 = 121,459.26/x - Step 3: Cross multiply
189,365.70x = 261,352.98 × 121,459.26 - Step 4: Simplify right side
189,365.70x = 31,743,739,549.59 - Step 5: Solve for x
x = 31,743,739,549.59/189,365.70 - Step 6: Final answer
x = 167,631.94
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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.