Finding the Fourth Proportional to 149,131.26, 205,795.08 and 85,424.76
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Solution
The fourth proportional to 149,131.26, 205,795.08 and 85,424.76 is: 117,882.70
Step by Step Solution
- Step 1: Write the proportion equation
149,131.26 : 205,795.08 = 85,424.76 : x - Step 2: Convert to fraction form
149,131.26/205,795.08 = 85,424.76/x - Step 3: Cross multiply
149,131.26x = 205,795.08 × 85,424.76 - Step 4: Simplify right side
149,131.26x = 17,579,995,318.18 - Step 5: Solve for x
x = 17,579,995,318.18/149,131.26 - Step 6: Final answer
x = 117,882.70
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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.