Finding the Fourth Proportional to 128,031.56, 192,085.79 and 60,614.99
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Solution
The fourth proportional to 128,031.56, 192,085.79 and 60,614.99 is: 90,940.69
Step by Step Solution
- Step 1: Write the proportion equation
128,031.56 : 192,085.79 = 60,614.99 : x - Step 2: Convert to fraction form
128,031.56/192,085.79 = 60,614.99/x - Step 3: Cross multiply
128,031.56x = 192,085.79 × 60,614.99 - Step 4: Simplify right side
128,031.56x = 11,643,278,417.13 - Step 5: Solve for x
x = 11,643,278,417.13/128,031.56 - Step 6: Final answer
x = 90,940.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.