Finding the Fourth Proportional to 126,728,021.07, 174,854,694.74 and 71,723,877.57
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Solution
The fourth proportional to 126,728,021.07, 174,854,694.74 and 71,723,877.57 is: 98,961,986.56
Step by Step Solution
- Step 1: Write the proportion equation
126,728,021.07 : 174,854,694.74 = 71,723,877.57 : x - Step 2: Convert to fraction form
126,728,021.07/174,854,694.74 = 71,723,877.57/x - Step 3: Cross multiply
126,728,021.07x = 174,854,694.74 × 71,723,877.57 - Step 4: Simplify right side
126,728,021.07x = 12,541,256,717,712,864 - Step 5: Solve for x
x = 12,541,256,717,712,864/126,728,021.07 - Step 6: Final answer
x = 98,961,986.56
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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.