Finding the Fourth Proportional to 100,550.14, 138,725.18 and 57,498.94
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Solution
The fourth proportional to 100,550.14, 138,725.18 and 57,498.94 is: 79,329.09
Step by Step Solution
- Step 1: Write the proportion equation
100,550.14 : 138,725.18 = 57,498.94 : x - Step 2: Convert to fraction form
100,550.14/138,725.18 = 57,498.94/x - Step 3: Cross multiply
100,550.14x = 138,725.18 × 57,498.94 - Step 4: Simplify right side
100,550.14x = 7,976,550,801.31 - Step 5: Solve for x
x = 7,976,550,801.31/100,550.14 - Step 6: Final answer
x = 79,329.09
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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.