Finding the Fourth Proportional to 101,539.12, 152,135.34 and 71,907.70
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Solution
The fourth proportional to 101,539.12, 152,135.34 and 71,907.70 is: 107,738.79
Step by Step Solution
- Step 1: Write the proportion equation
101,539.12 : 152,135.34 = 71,907.70 : x - Step 2: Convert to fraction form
101,539.12/152,135.34 = 71,907.70/x - Step 3: Cross multiply
101,539.12x = 152,135.34 × 71,907.70 - Step 4: Simplify right side
101,539.12x = 10,939,702,388.12 - Step 5: Solve for x
x = 10,939,702,388.12/101,539.12 - Step 6: Final answer
x = 107,738.79
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.