Finding the Fourth Proportional to 140.12, 192.10 and 137.99
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Solution
The fourth proportional to 140.12, 192.10 and 137.99 is: 189.18
Step by Step Solution
- Step 1: Write the proportion equation
140.12 : 192.10 = 137.99 : x - Step 2: Convert to fraction form
140.12/192.10 = 137.99/x - Step 3: Cross multiply
140.12x = 192.10 × 137.99 - Step 4: Simplify right side
140.12x = 26,507.88 - Step 5: Solve for x
x = 26,507.88/140.12 - Step 6: Final answer
x = 189.18
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.