Finding the Fourth Proportional to 141,221.36, 194,884.81 and 76,690.08
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Solution
The fourth proportional to 141,221.36, 194,884.81 and 76,690.08 is: 105,831.95
Step by Step Solution
- Step 1: Write the proportion equation
141,221.36 : 194,884.81 = 76,690.08 : x - Step 2: Convert to fraction form
141,221.36/194,884.81 = 76,690.08/x - Step 3: Cross multiply
141,221.36x = 194,884.81 × 76,690.08 - Step 4: Simplify right side
141,221.36x = 14,945,731,477.96 - Step 5: Solve for x
x = 14,945,731,477.96/141,221.36 - Step 6: Final answer
x = 105,831.95
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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.