Finding the Fourth Proportional to 125,340.18, 172,991.57 and 74,381.01
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Solution
The fourth proportional to 125,340.18, 172,991.57 and 74,381.01 is: 102,658.92
Step by Step Solution
- Step 1: Write the proportion equation
125,340.18 : 172,991.57 = 74,381.01 : x - Step 2: Convert to fraction form
125,340.18/172,991.57 = 74,381.01/x - Step 3: Cross multiply
125,340.18x = 172,991.57 × 74,381.01 - Step 4: Simplify right side
125,340.18x = 12,867,287,326.18 - Step 5: Solve for x
x = 12,867,287,326.18/125,340.18 - Step 6: Final answer
x = 102,658.92
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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.