Finding the Fourth Proportional to 115,167.18, 172,428.12 and 86,998.62
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Solution
The fourth proportional to 115,167.18, 172,428.12 and 86,998.62 is: 130,254.20
Step by Step Solution
- Step 1: Write the proportion equation
115,167.18 : 172,428.12 = 86,998.62 : x - Step 2: Convert to fraction form
115,167.18/172,428.12 = 86,998.62/x - Step 3: Cross multiply
115,167.18x = 172,428.12 × 86,998.62 - Step 4: Simplify right side
115,167.18x = 15,001,008,489.19 - Step 5: Solve for x
x = 15,001,008,489.19/115,167.18 - Step 6: Final answer
x = 130,254.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.