Finding the Fourth Proportional to 126,139.26, 188,831.09 and 121,653.14
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Solution
The fourth proportional to 126,139.26, 188,831.09 and 121,653.14 is: 182,115.35
Step by Step Solution
- Step 1: Write the proportion equation
126,139.26 : 188,831.09 = 121,653.14 : x - Step 2: Convert to fraction form
126,139.26/188,831.09 = 121,653.14/x - Step 3: Cross multiply
126,139.26x = 188,831.09 × 121,653.14 - Step 4: Simplify right side
126,139.26x = 22,971,893,947.78 - Step 5: Solve for x
x = 22,971,893,947.78/126,139.26 - Step 6: Final answer
x = 182,115.35
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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.