Finding the Fourth Proportional to 75,157.80, 112,148.58 and 74,720.40
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Solution
The fourth proportional to 75,157.80, 112,148.58 and 74,720.40 is: 111,495.90
Step by Step Solution
- Step 1: Write the proportion equation
75,157.80 : 112,148.58 = 74,720.40 : x - Step 2: Convert to fraction form
75,157.80/112,148.58 = 74,720.40/x - Step 3: Cross multiply
75,157.80x = 112,148.58 × 74,720.40 - Step 4: Simplify right side
75,157.80x = 8,379,786,757.03 - Step 5: Solve for x
x = 8,379,786,757.03/75,157.80 - Step 6: Final answer
x = 111,495.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.