Finding the Fourth Proportional to 149,079.26, 205,725.69 and 85,412.95
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Solution
The fourth proportional to 149,079.26, 205,725.69 and 85,412.95 is: 117,867.75
Step by Step Solution
- Step 1: Write the proportion equation
149,079.26 : 205,725.69 = 85,412.95 : x - Step 2: Convert to fraction form
149,079.26/205,725.69 = 85,412.95/x - Step 3: Cross multiply
149,079.26x = 205,725.69 × 85,412.95 - Step 4: Simplify right side
149,079.26x = 17,571,637,559.37 - Step 5: Solve for x
x = 17,571,637,559.37/149,079.26 - Step 6: Final answer
x = 117,867.75
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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.