Finding the Fourth Proportional to 125,299.19, 172,745.58 and 99,543.18
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Solution
The fourth proportional to 125,299.19, 172,745.58 and 99,543.18 is: 137,236.68
Step by Step Solution
- Step 1: Write the proportion equation
125,299.19 : 172,745.58 = 99,543.18 : x - Step 2: Convert to fraction form
125,299.19/172,745.58 = 99,543.18/x - Step 3: Cross multiply
125,299.19x = 172,745.58 × 99,543.18 - Step 4: Simplify right side
125,299.19x = 17,195,644,364.14 - Step 5: Solve for x
x = 17,195,644,364.14/125,299.19 - Step 6: Final answer
x = 137,236.68
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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.