Finding the Fourth Proportional to 140.07, 209.96 and 79.08
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Solution
The fourth proportional to 140.07, 209.96 and 79.08 is: 118.53
Step by Step Solution
- Step 1: Write the proportion equation
140.07 : 209.96 = 79.08 : x - Step 2: Convert to fraction form
140.07/209.96 = 79.08/x - Step 3: Cross multiply
140.07x = 209.96 × 79.08 - Step 4: Simplify right side
140.07x = 16,602.75 - Step 5: Solve for x
x = 16,602.75/140.07 - Step 6: Final answer
x = 118.53
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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.