Finding the Fourth Proportional to 129,972.70, 195,045.45 and 73,812.70
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Solution
The fourth proportional to 129,972.70, 195,045.45 and 73,812.70 is: 110,768.12
Step by Step Solution
- Step 1: Write the proportion equation
129,972.70 : 195,045.45 = 73,812.70 : x - Step 2: Convert to fraction form
129,972.70/195,045.45 = 73,812.70/x - Step 3: Cross multiply
129,972.70x = 195,045.45 × 73,812.70 - Step 4: Simplify right side
129,972.70x = 14,396,831,287.22 - Step 5: Solve for x
x = 14,396,831,287.22/129,972.70 - Step 6: Final answer
x = 110,768.12
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.