Finding the Fourth Proportional to 130,122.62, 179,559.24 and 79,128.31
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Solution
The fourth proportional to 130,122.62, 179,559.24 and 79,128.31 is: 109,190.99
Step by Step Solution
- Step 1: Write the proportion equation
130,122.62 : 179,559.24 = 79,128.31 : x - Step 2: Convert to fraction form
130,122.62/179,559.24 = 79,128.31/x - Step 3: Cross multiply
130,122.62x = 179,559.24 × 79,128.31 - Step 4: Simplify right side
130,122.62x = 14,208,218,308.29 - Step 5: Solve for x
x = 14,208,218,308.29/130,122.62 - Step 6: Final answer
x = 109,190.99
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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.