Finding the Fourth Proportional to 134,908.68, 186,145.02 and 78,289.68
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Solution
The fourth proportional to 134,908.68, 186,145.02 and 78,289.68 is: 108,022.95
Step by Step Solution
- Step 1: Write the proportion equation
134,908.68 : 186,145.02 = 78,289.68 : x - Step 2: Convert to fraction form
134,908.68/186,145.02 = 78,289.68/x - Step 3: Cross multiply
134,908.68x = 186,145.02 × 78,289.68 - Step 4: Simplify right side
134,908.68x = 14,573,234,049.39 - Step 5: Solve for x
x = 14,573,234,049.39/134,908.68 - Step 6: Final answer
x = 108,022.95
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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.