Finding the Fourth Proportional to 131,782.17, 181,859.50 and 71,352.85
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Solution
The fourth proportional to 131,782.17, 181,859.50 and 71,352.85 is: 98,466.99
Step by Step Solution
- Step 1: Write the proportion equation
131,782.17 : 181,859.50 = 71,352.85 : x - Step 2: Convert to fraction form
131,782.17/181,859.50 = 71,352.85/x - Step 3: Cross multiply
131,782.17x = 181,859.50 × 71,352.85 - Step 4: Simplify right side
131,782.17x = 12,976,193,800.78 - Step 5: Solve for x
x = 12,976,193,800.78/131,782.17 - Step 6: Final answer
x = 98,466.99
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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.