Finding the Fourth Proportional to 142,773.22, 197,028.21 and 79,112.08
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Solution
The fourth proportional to 142,773.22, 197,028.21 and 79,112.08 is: 109,175.32
Step by Step Solution
- Step 1: Write the proportion equation
142,773.22 : 197,028.21 = 79,112.08 : x - Step 2: Convert to fraction form
142,773.22/197,028.21 = 79,112.08/x - Step 3: Cross multiply
142,773.22x = 197,028.21 × 79,112.08 - Step 4: Simplify right side
142,773.22x = 15,587,311,511.78 - Step 5: Solve for x
x = 15,587,311,511.78/142,773.22 - Step 6: Final answer
x = 109,175.32
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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.