Finding the Fourth Proportional to 212,905.97, 319,359.00 and 86,614.92
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Solution
The fourth proportional to 212,905.97, 319,359.00 and 86,614.92 is: 129,922.40
Step by Step Solution
- Step 1: Write the proportion equation
212,905.97 : 319,359.00 = 86,614.92 : x - Step 2: Convert to fraction form
212,905.97/319,359.00 = 86,614.92/x - Step 3: Cross multiply
212,905.97x = 319,359.00 × 86,614.92 - Step 4: Simplify right side
212,905.97x = 27,661,254,561.09 - Step 5: Solve for x
x = 27,661,254,561.09/212,905.97 - Step 6: Final answer
x = 129,922.40
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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.