Finding the Fourth Proportional to 112,867.99, 155,773.68 and 69,861.28
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Solution
The fourth proportional to 112,867.99, 155,773.68 and 69,861.28 is: 96,418.38
Step by Step Solution
- Step 1: Write the proportion equation
112,867.99 : 155,773.68 = 69,861.28 : x - Step 2: Convert to fraction form
112,867.99/155,773.68 = 69,861.28/x - Step 3: Cross multiply
112,867.99x = 155,773.68 × 69,861.28 - Step 4: Simplify right side
112,867.99x = 10,882,548,675.11 - Step 5: Solve for x
x = 10,882,548,675.11/112,867.99 - Step 6: Final answer
x = 96,418.38
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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.