Finding the Fourth Proportional to 132,343.80, 198,515.70 and 79,855.80
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Solution
The fourth proportional to 132,343.80, 198,515.70 and 79,855.80 is: 119,783.70
Step by Step Solution
- Step 1: Write the proportion equation
132,343.80 : 198,515.70 = 79,855.80 : x - Step 2: Convert to fraction form
132,343.80/198,515.70 = 79,855.80/x - Step 3: Cross multiply
132,343.80x = 198,515.70 × 79,855.80 - Step 4: Simplify right side
132,343.80x = 15,852,630,036.06 - Step 5: Solve for x
x = 15,852,630,036.06/132,343.80 - Step 6: Final answer
x = 119,783.70
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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.