Finding the Fourth Proportional to 153,872.99, 212,380.15 and 90,231.29
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Solution
The fourth proportional to 153,872.99, 212,380.15 and 90,231.29 is: 124,539.95
Step by Step Solution
- Step 1: Write the proportion equation
153,872.99 : 212,380.15 = 90,231.29 : x - Step 2: Convert to fraction form
153,872.99/212,380.15 = 90,231.29/x - Step 3: Cross multiply
153,872.99x = 212,380.15 × 90,231.29 - Step 4: Simplify right side
153,872.99x = 19,163,333,617.41 - Step 5: Solve for x
x = 19,163,333,617.41/153,872.99 - Step 6: Final answer
x = 124,539.95
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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.