Finding the Fourth Proportional to 135,110.64, 186,447.12 and 78,517.68
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Solution
The fourth proportional to 135,110.64, 186,447.12 and 78,517.68 is: 108,351.17
Step by Step Solution
- Step 1: Write the proportion equation
135,110.64 : 186,447.12 = 78,517.68 : x - Step 2: Convert to fraction form
135,110.64/186,447.12 = 78,517.68/x - Step 3: Cross multiply
135,110.64x = 186,447.12 × 78,517.68 - Step 4: Simplify right side
135,110.64x = 14,639,395,305.08 - Step 5: Solve for x
x = 14,639,395,305.08/135,110.64 - Step 6: Final answer
x = 108,351.17
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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.