Finding the Fourth Proportional to 140.11, 210.09 and 79.13
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Solution
The fourth proportional to 140.11, 210.09 and 79.13 is: 118.65
Step by Step Solution
- Step 1: Write the proportion equation
140.11 : 210.09 = 79.13 : x - Step 2: Convert to fraction form
140.11/210.09 = 79.13/x - Step 3: Cross multiply
140.11x = 210.09 × 79.13 - Step 4: Simplify right side
140.11x = 16,624.42 - Step 5: Solve for x
x = 16,624.42/140.11 - Step 6: Final answer
x = 118.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.