Finding the Fourth Proportional to 99,179.61, 136,867.36 and 53,857.19
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Solution
The fourth proportional to 99,179.61, 136,867.36 and 53,857.19 is: 74,322.64
Step by Step Solution
- Step 1: Write the proportion equation
99,179.61 : 136,867.36 = 53,857.19 : x - Step 2: Convert to fraction form
99,179.61/136,867.36 = 53,857.19/x - Step 3: Cross multiply
99,179.61x = 136,867.36 × 53,857.19 - Step 4: Simplify right side
99,179.61x = 7,371,290,458.70 - Step 5: Solve for x
x = 7,371,290,458.70/99,179.61 - Step 6: Final answer
x = 74,322.64
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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.