Finding the Fourth Proportional to 143,102.88, 214,658.88 and 71,986.65
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Solution
The fourth proportional to 143,102.88, 214,658.88 and 71,986.65 is: 107,982.27
Step by Step Solution
- Step 1: Write the proportion equation
143,102.88 : 214,658.88 = 71,986.65 : x - Step 2: Convert to fraction form
143,102.88/214,658.88 = 71,986.65/x - Step 3: Cross multiply
143,102.88x = 214,658.88 × 71,986.65 - Step 4: Simplify right side
143,102.88x = 15,452,573,800.15 - Step 5: Solve for x
x = 15,452,573,800.15/143,102.88 - Step 6: Final answer
x = 107,982.27
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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.