Finding the Fourth Proportional to 126,640.45, 174,726.21 and 72,924.09
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Solution
The fourth proportional to 126,640.45, 174,726.21 and 72,924.09 is: 100,613.59
Step by Step Solution
- Step 1: Write the proportion equation
126,640.45 : 174,726.21 = 72,924.09 : x - Step 2: Convert to fraction form
126,640.45/174,726.21 = 72,924.09/x - Step 3: Cross multiply
126,640.45x = 174,726.21 × 72,924.09 - Step 4: Simplify right side
126,640.45x = 12,741,749,863.40 - Step 5: Solve for x
x = 12,741,749,863.40/126,640.45 - Step 6: Final answer
x = 100,613.59
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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.