Finding the Fourth Proportional to 138,861.84, 208,204.47 and 117,809.13
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Solution
The fourth proportional to 138,861.84, 208,204.47 and 117,809.13 is: 176,638.79
Step by Step Solution
- Step 1: Write the proportion equation
138,861.84 : 208,204.47 = 117,809.13 : x - Step 2: Convert to fraction form
138,861.84/208,204.47 = 117,809.13/x - Step 3: Cross multiply
138,861.84x = 208,204.47 × 117,809.13 - Step 4: Simplify right side
138,861.84x = 24,528,387,472.81 - Step 5: Solve for x
x = 24,528,387,472.81/138,861.84 - Step 6: Final answer
x = 176,638.79
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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.