Finding the Fourth Proportional to 209,126.99, 313,514.12 and 90,709.17
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Solution
The fourth proportional to 209,126.99, 313,514.12 and 90,709.17 is: 135,987.26
Step by Step Solution
- Step 1: Write the proportion equation
209,126.99 : 313,514.12 = 90,709.17 : x - Step 2: Convert to fraction form
209,126.99/313,514.12 = 90,709.17/x - Step 3: Cross multiply
209,126.99x = 313,514.12 × 90,709.17 - Step 4: Simplify right side
209,126.99x = 28,438,605,154.93 - Step 5: Solve for x
x = 28,438,605,154.93/209,126.99 - Step 6: Final answer
x = 135,987.26
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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.