Finding the Fourth Proportional to 157,153.43, 216,876.33 and 85,538.09
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Solution
The fourth proportional to 157,153.43, 216,876.33 and 85,538.09 is: 118,045.07
Step by Step Solution
- Step 1: Write the proportion equation
157,153.43 : 216,876.33 = 85,538.09 : x - Step 2: Convert to fraction form
157,153.43/216,876.33 = 85,538.09/x - Step 3: Cross multiply
157,153.43x = 216,876.33 × 85,538.09 - Step 4: Simplify right side
157,153.43x = 18,551,187,034.41 - Step 5: Solve for x
x = 18,551,187,034.41/157,153.43 - Step 6: Final answer
x = 118,045.07
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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.