Finding the Fourth Proportional to 135,373.58, 186,813.18 and 74,942.90
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Solution
The fourth proportional to 135,373.58, 186,813.18 and 74,942.90 is: 103,419.90
Step by Step Solution
- Step 1: Write the proportion equation
135,373.58 : 186,813.18 = 74,942.90 : x - Step 2: Convert to fraction form
135,373.58/186,813.18 = 74,942.90/x - Step 3: Cross multiply
135,373.58x = 186,813.18 × 74,942.90 - Step 4: Simplify right side
135,373.58x = 14,000,321,467.42 - Step 5: Solve for x
x = 14,000,321,467.42/135,373.58 - Step 6: Final answer
x = 103,419.90
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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.