Finding the Fourth Proportional to 149,063.49, 205,704.36 and 85,438.80
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Solution
The fourth proportional to 149,063.49, 205,704.36 and 85,438.80 is: 117,903.68
Step by Step Solution
- Step 1: Write the proportion equation
149,063.49 : 205,704.36 = 85,438.80 : x - Step 2: Convert to fraction form
149,063.49/205,704.36 = 85,438.80/x - Step 3: Cross multiply
149,063.49x = 205,704.36 × 85,438.80 - Step 4: Simplify right side
149,063.49x = 17,575,133,673.17 - Step 5: Solve for x
x = 17,575,133,673.17/149,063.49 - Step 6: Final answer
x = 117,903.68
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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.