Finding the Fourth Proportional to 135,247.94, 186,621.14 and 77,889.68
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Solution
The fourth proportional to 135,247.94, 186,621.14 and 77,889.68 is: 107,475.65
Step by Step Solution
- Step 1: Write the proportion equation
135,247.94 : 186,621.14 = 77,889.68 : x - Step 2: Convert to fraction form
135,247.94/186,621.14 = 77,889.68/x - Step 3: Cross multiply
135,247.94x = 186,621.14 × 77,889.68 - Step 4: Simplify right side
135,247.94x = 14,535,859,553.28 - Step 5: Solve for x
x = 14,535,859,553.28/135,247.94 - Step 6: Final answer
x = 107,475.65
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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.