Finding the Fourth Proportional to 189,616.48, 261,721.20 and 117,955.84
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Solution
The fourth proportional to 189,616.48, 261,721.20 and 117,955.84 is: 162,810.45
Step by Step Solution
- Step 1: Write the proportion equation
189,616.48 : 261,721.20 = 117,955.84 : x - Step 2: Convert to fraction form
189,616.48/261,721.20 = 117,955.84/x - Step 3: Cross multiply
189,616.48x = 261,721.20 × 117,955.84 - Step 4: Simplify right side
189,616.48x = 30,871,543,991.81 - Step 5: Solve for x
x = 30,871,543,991.81/189,616.48 - Step 6: Final answer
x = 162,810.45
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1.5x scale
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.