Finding the Fourth Proportional to 126,425.69, 174,472.76 and 72,710.75
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Solution
The fourth proportional to 126,425.69, 174,472.76 and 72,710.75 is: 100,343.88
Step by Step Solution
- Step 1: Write the proportion equation
126,425.69 : 174,472.76 = 72,710.75 : x - Step 2: Convert to fraction form
126,425.69/174,472.76 = 72,710.75/x - Step 3: Cross multiply
126,425.69x = 174,472.76 × 72,710.75 - Step 4: Simplify right side
126,425.69x = 12,686,043,998.25 - Step 5: Solve for x
x = 12,686,043,998.25/126,425.69 - Step 6: Final answer
x = 100,343.88
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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.