Finding the Fourth Proportional to 149,129.24, 205,803.21 and 85,479.05
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Solution
The fourth proportional to 149,129.24, 205,803.21 and 85,479.05 is: 117,963.87
Step by Step Solution
- Step 1: Write the proportion equation
149,129.24 : 205,803.21 = 85,479.05 : x - Step 2: Convert to fraction form
149,129.24/205,803.21 = 85,479.05/x - Step 3: Cross multiply
149,129.24x = 205,803.21 × 85,479.05 - Step 4: Simplify right side
149,129.24x = 17,591,862,877.75 - Step 5: Solve for x
x = 17,591,862,877.75/149,129.24 - Step 6: Final answer
x = 117,963.87
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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.