Finding the Fourth Proportional to 125,986.20, 188,720.10 and 63,691.80
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Solution
The fourth proportional to 125,986.20, 188,720.10 and 63,691.80 is: 95,406.66
Step by Step Solution
- Step 1: Write the proportion equation
125,986.20 : 188,720.10 = 63,691.80 : x - Step 2: Convert to fraction form
125,986.20/188,720.10 = 63,691.80/x - Step 3: Cross multiply
125,986.20x = 188,720.10 × 63,691.80 - Step 4: Simplify right side
125,986.20x = 12,019,922,865.18 - Step 5: Solve for x
x = 12,019,922,865.18/125,986.20 - Step 6: Final answer
x = 95,406.66
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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.