Finding the Fourth Proportional to 124,665.75, 172,051.19 and 74,364.75
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Solution
The fourth proportional to 124,665.75, 172,051.19 and 74,364.75 is: 102,630.78
Step by Step Solution
- Step 1: Write the proportion equation
124,665.75 : 172,051.19 = 74,364.75 : x - Step 2: Convert to fraction form
124,665.75/172,051.19 = 74,364.75/x - Step 3: Cross multiply
124,665.75x = 172,051.19 × 74,364.75 - Step 4: Simplify right side
124,665.75x = 12,794,543,359.73 - Step 5: Solve for x
x = 12,794,543,359.73/124,665.75 - Step 6: Final answer
x = 102,630.78
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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.