Finding the Fourth Proportional to 129,611.13, 178,863.36 and 69,995.13
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Solution
The fourth proportional to 129,611.13, 178,863.36 and 69,995.13 is: 96,593.28
Step by Step Solution
- Step 1: Write the proportion equation
129,611.13 : 178,863.36 = 69,995.13 : x - Step 2: Convert to fraction form
129,611.13/178,863.36 = 69,995.13/x - Step 3: Cross multiply
129,611.13x = 178,863.36 × 69,995.13 - Step 4: Simplify right side
129,611.13x = 12,519,564,135.44 - Step 5: Solve for x
x = 12,519,564,135.44/129,611.13 - Step 6: Final answer
x = 96,593.28
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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.