Finding the Fourth Proportional to 159,721.40, 239,582.10 and 131,727.80
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Solution
The fourth proportional to 159,721.40, 239,582.10 and 131,727.80 is: 197,591.70
Step by Step Solution
- Step 1: Write the proportion equation
159,721.40 : 239,582.10 = 131,727.80 : x - Step 2: Convert to fraction form
159,721.40/239,582.10 = 131,727.80/x - Step 3: Cross multiply
159,721.40x = 239,582.10 × 131,727.80 - Step 4: Simplify right side
159,721.40x = 31,559,622,952.38 - Step 5: Solve for x
x = 31,559,622,952.38/159,721.40 - Step 6: Final answer
x = 197,591.70
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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.