Finding the Fourth Proportional to 100,397.06, 138,554.96 and 57,382.88
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Solution
The fourth proportional to 100,397.06, 138,554.96 and 57,382.88 is: 79,192.39
Step by Step Solution
- Step 1: Write the proportion equation
100,397.06 : 138,554.96 = 57,382.88 : x - Step 2: Convert to fraction form
100,397.06/138,554.96 = 57,382.88/x - Step 3: Cross multiply
100,397.06x = 138,554.96 × 57,382.88 - Step 4: Simplify right side
100,397.06x = 7,950,682,643.08 - Step 5: Solve for x
x = 7,950,682,643.08/100,397.06 - Step 6: Final answer
x = 79,192.39
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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.