Finding the Fourth Proportional to 138,912.66, 208,368.99 and 92,256.66
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Solution
The fourth proportional to 138,912.66, 208,368.99 and 92,256.66 is: 138,384.99
Step by Step Solution
- Step 1: Write the proportion equation
138,912.66 : 208,368.99 = 92,256.66 : x - Step 2: Convert to fraction form
138,912.66/208,368.99 = 92,256.66/x - Step 3: Cross multiply
138,912.66x = 208,368.99 × 92,256.66 - Step 4: Simplify right side
138,912.66x = 19,223,427,064.97 - Step 5: Solve for x
x = 19,223,427,064.97/138,912.66 - Step 6: Final answer
x = 138,384.99
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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.