Finding the Fourth Proportional to 209,089.36, 313,535.22 and 81,065.62
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Solution
The fourth proportional to 209,089.36, 313,535.22 and 81,065.62 is: 121,560.12
Step by Step Solution
- Step 1: Write the proportion equation
209,089.36 : 313,535.22 = 81,065.62 : x - Step 2: Convert to fraction form
209,089.36/313,535.22 = 81,065.62/x - Step 3: Cross multiply
209,089.36x = 313,535.22 × 81,065.62 - Step 4: Simplify right side
209,089.36x = 25,416,927,001.14 - Step 5: Solve for x
x = 25,416,927,001.14/209,089.36 - Step 6: Final answer
x = 121,560.12
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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.