Finding the Fourth Proportional to 159,137.16, 219,611.45 and 91,154.09
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Solution
The fourth proportional to 159,137.16, 219,611.45 and 91,154.09 is: 125,793.89
Step by Step Solution
- Step 1: Write the proportion equation
159,137.16 : 219,611.45 = 91,154.09 : x - Step 2: Convert to fraction form
159,137.16/219,611.45 = 91,154.09/x - Step 3: Cross multiply
159,137.16x = 219,611.45 × 91,154.09 - Step 4: Simplify right side
159,137.16x = 20,018,481,878.33 - Step 5: Solve for x
x = 20,018,481,878.33/159,137.16 - Step 6: Final answer
x = 125,793.89
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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.