Finding the Fourth Proportional to 139,614.69, 207,842.97 and 138,784.33
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Solution
The fourth proportional to 139,614.69, 207,842.97 and 138,784.33 is: 206,606.82
Step by Step Solution
- Step 1: Write the proportion equation
139,614.69 : 207,842.97 = 138,784.33 : x - Step 2: Convert to fraction form
139,614.69/207,842.97 = 138,784.33/x - Step 3: Cross multiply
139,614.69x = 207,842.97 × 138,784.33 - Step 4: Simplify right side
139,614.69x = 28,845,347,336.66 - Step 5: Solve for x
x = 28,845,347,336.66/139,614.69 - Step 6: Final answer
x = 206,606.82
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.