Finding the Fourth Proportional to 143,285.12, 197,732.04 and 79,621.58
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Solution
The fourth proportional to 143,285.12, 197,732.04 and 79,621.58 is: 109,876.99
Step by Step Solution
- Step 1: Write the proportion equation
143,285.12 : 197,732.04 = 79,621.58 : x - Step 2: Convert to fraction form
143,285.12/197,732.04 = 79,621.58/x - Step 3: Cross multiply
143,285.12x = 197,732.04 × 79,621.58 - Step 4: Simplify right side
143,285.12x = 15,743,737,441.42 - Step 5: Solve for x
x = 15,743,737,441.42/143,285.12 - Step 6: Final answer
x = 109,876.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.