Finding the Fourth Proportional to 149,440.59, 206,221.81 and 81,456.07
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Solution
The fourth proportional to 149,440.59, 206,221.81 and 81,456.07 is: 112,405.99
Step by Step Solution
- Step 1: Write the proportion equation
149,440.59 : 206,221.81 = 81,456.07 : x - Step 2: Convert to fraction form
149,440.59/206,221.81 = 81,456.07/x - Step 3: Cross multiply
149,440.59x = 206,221.81 × 81,456.07 - Step 4: Simplify right side
149,440.59x = 16,798,018,190.89 - Step 5: Solve for x
x = 16,798,018,190.89/149,440.59 - Step 6: Final answer
x = 112,405.99
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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.