Finding the Fourth Proportional to 117,142.62, 161,535.99 and 100,202.94
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Solution
The fourth proportional to 117,142.62, 161,535.99 and 100,202.94 is: 138,176.70
Step by Step Solution
- Step 1: Write the proportion equation
117,142.62 : 161,535.99 = 100,202.94 : x - Step 2: Convert to fraction form
117,142.62/161,535.99 = 100,202.94/x - Step 3: Cross multiply
117,142.62x = 161,535.99 × 100,202.94 - Step 4: Simplify right side
117,142.62x = 16,186,381,113.81 - Step 5: Solve for x
x = 16,186,381,113.81/117,142.62 - Step 6: Final answer
x = 138,176.70
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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.