Finding the Fourth Proportional to 115,421.43, 173,193.09 and 81,904.02
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Solution
The fourth proportional to 115,421.43, 173,193.09 and 81,904.02 is: 122,899.28
Step by Step Solution
- Step 1: Write the proportion equation
115,421.43 : 173,193.09 = 81,904.02 : x - Step 2: Convert to fraction form
115,421.43/173,193.09 = 81,904.02/x - Step 3: Cross multiply
115,421.43x = 173,193.09 × 81,904.02 - Step 4: Simplify right side
115,421.43x = 14,185,210,307.22 - Step 5: Solve for x
x = 14,185,210,307.22/115,421.43 - Step 6: Final answer
x = 122,899.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.