Finding the Fourth Proportional to 118,878.68, 164,056.77 and 65,163.68
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Solution
The fourth proportional to 118,878.68, 164,056.77 and 65,163.68 is: 89,928.17
Step by Step Solution
- Step 1: Write the proportion equation
118,878.68 : 164,056.77 = 65,163.68 : x - Step 2: Convert to fraction form
118,878.68/164,056.77 = 65,163.68/x - Step 3: Cross multiply
118,878.68x = 164,056.77 × 65,163.68 - Step 4: Simplify right side
118,878.68x = 10,690,542,286.19 - Step 5: Solve for x
x = 10,690,542,286.19/118,878.68 - Step 6: Final answer
x = 89,928.17
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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.