Finding the Fourth Proportional to 115,212.98, 158,916.11 and 100,079.28
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Solution
The fourth proportional to 115,212.98, 158,916.11 and 100,079.28 is: 138,041.82
Step by Step Solution
- Step 1: Write the proportion equation
115,212.98 : 158,916.11 = 100,079.28 : x - Step 2: Convert to fraction form
115,212.98/158,916.11 = 100,079.28/x - Step 3: Cross multiply
115,212.98x = 158,916.11 × 100,079.28 - Step 4: Simplify right side
115,212.98x = 15,904,209,074.62 - Step 5: Solve for x
x = 15,904,209,074.62/115,212.98 - Step 6: Final answer
x = 138,041.82
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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.