Finding the Fourth Proportional to 130,276.19, 179,768.44 and 72,912.09
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Solution
The fourth proportional to 130,276.19, 179,768.44 and 72,912.09 is: 100,611.58
Step by Step Solution
- Step 1: Write the proportion equation
130,276.19 : 179,768.44 = 72,912.09 : x - Step 2: Convert to fraction form
130,276.19/179,768.44 = 72,912.09/x - Step 3: Cross multiply
130,276.19x = 179,768.44 × 72,912.09 - Step 4: Simplify right side
130,276.19x = 13,107,292,676.44 - Step 5: Solve for x
x = 13,107,292,676.44/130,276.19 - Step 6: Final answer
x = 100,611.58
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1.5x scale
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.