Finding the Third Proportional to 78,853.50 and 121,803.75
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Solution
The third proportional to 78,853.50 and 121,803.75 is: 188,148.32
Step by Step Solution
- Step 1: Write the proportion equation
78,853.50 : 121,803.75 = 121,803.75 : x - Step 2: Convert to fraction form
78,853.50/121,803.75 = 121,803.75/x - Step 3: Cross multiply
78,853.50x = 121,803.75 × 121,803.75 - Step 4: Simplify right side
78,853.50x = 14,836,153,514.06 - Step 5: Solve for x
x = 14,836,153,514.06/78,853.50 - Step 6: Final answer
x = 188,148.32
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Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.