Finding the Fourth Proportional to 143,035.44, 197,394.18 and 86,435.88
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Solution
The fourth proportional to 143,035.44, 197,394.18 and 86,435.88 is: 119,284.70
Step by Step Solution
- Step 1: Write the proportion equation
143,035.44 : 197,394.18 = 86,435.88 : x - Step 2: Convert to fraction form
143,035.44/197,394.18 = 86,435.88/x - Step 3: Cross multiply
143,035.44x = 197,394.18 × 86,435.88 - Step 4: Simplify right side
143,035.44x = 17,061,939,655.18 - Step 5: Solve for x
x = 17,061,939,655.18/143,035.44 - Step 6: Final answer
x = 119,284.70
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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.