Finding the Fourth Proportional to 143,574.01, 198,128.77 and 79,910.44
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Solution
The fourth proportional to 143,574.01, 198,128.77 and 79,910.44 is: 110,274.53
Step by Step Solution
- Step 1: Write the proportion equation
143,574.01 : 198,128.77 = 79,910.44 : x - Step 2: Convert to fraction form
143,574.01/198,128.77 = 79,910.44/x - Step 3: Cross multiply
143,574.01x = 198,128.77 × 79,910.44 - Step 4: Simplify right side
143,574.01x = 15,832,557,187.36 - Step 5: Solve for x
x = 15,832,557,187.36/143,574.01 - Step 6: Final answer
x = 110,274.53
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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.