Finding the Fourth Proportional to 199,855.80, 299,783.70 and 106,543.80
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Solution
The fourth proportional to 199,855.80, 299,783.70 and 106,543.80 is: 159,815.70
Step by Step Solution
- Step 1: Write the proportion equation
199,855.80 : 299,783.70 = 106,543.80 : x - Step 2: Convert to fraction form
199,855.80/299,783.70 = 106,543.80/x - Step 3: Cross multiply
199,855.80x = 299,783.70 × 106,543.80 - Step 4: Simplify right side
199,855.80x = 31,940,094,576.06 - Step 5: Solve for x
x = 31,940,094,576.06/199,855.80 - Step 6: Final answer
x = 159,815.70
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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.