Finding the Fourth Proportional to 100,396.06, 138,553.58 and 57,381.88
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Solution
The fourth proportional to 100,396.06, 138,553.58 and 57,381.88 is: 79,191.01
Step by Step Solution
- Step 1: Write the proportion equation
100,396.06 : 138,553.58 = 57,381.88 : x - Step 2: Convert to fraction form
100,396.06/138,553.58 = 57,381.88/x - Step 3: Cross multiply
100,396.06x = 138,553.58 × 57,381.88 - Step 4: Simplify right side
100,396.06x = 7,950,464,901.13 - Step 5: Solve for x
x = 7,950,464,901.13/100,396.06 - Step 6: Final answer
x = 79,191.01
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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.