Finding the Fourth Proportional to 149,130.24, 205,732.81 and 100,716.42
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Solution
The fourth proportional to 149,130.24, 205,732.81 and 100,716.42 is: 138,943.46
Step by Step Solution
- Step 1: Write the proportion equation
149,130.24 : 205,732.81 = 100,716.42 : x - Step 2: Convert to fraction form
149,130.24/205,732.81 = 100,716.42/x - Step 3: Cross multiply
149,130.24x = 205,732.81 × 100,716.42 - Step 4: Simplify right side
149,130.24x = 20,720,672,099.74 - Step 5: Solve for x
x = 20,720,672,099.74/149,130.24 - Step 6: Final answer
x = 138,943.46
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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.