Finding the Fourth Proportional to 149,403.09, 206,176.29 and 81,420.06
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Solution
The fourth proportional to 149,403.09, 206,176.29 and 81,420.06 is: 112,359.70
Step by Step Solution
- Step 1: Write the proportion equation
149,403.09 : 206,176.29 = 81,420.06 : x - Step 2: Convert to fraction form
149,403.09/206,176.29 = 81,420.06/x - Step 3: Cross multiply
149,403.09x = 206,176.29 × 81,420.06 - Step 4: Simplify right side
149,403.09x = 16,786,885,902.38 - Step 5: Solve for x
x = 16,786,885,902.38/149,403.09 - Step 6: Final answer
x = 112,359.70
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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.