Finding the Fourth Proportional to 134,903.68, 186,138.18 and 78,284.68
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Solution
The fourth proportional to 134,903.68, 186,138.18 and 78,284.68 is: 108,016.09
Step by Step Solution
- Step 1: Write the proportion equation
134,903.68 : 186,138.18 = 78,284.68 : x - Step 2: Convert to fraction form
134,903.68/186,138.18 = 78,284.68/x - Step 3: Cross multiply
134,903.68x = 186,138.18 × 78,284.68 - Step 4: Simplify right side
134,903.68x = 14,571,767,857.08 - Step 5: Solve for x
x = 14,571,767,857.08/134,903.68 - Step 6: Final answer
x = 108,016.09
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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.