Finding the Fourth Proportional to 117,136.74, 161,648.49 and 63,421.75
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Solution
The fourth proportional to 117,136.74, 161,648.49 and 63,421.75 is: 87,521.90
Step by Step Solution
- Step 1: Write the proportion equation
117,136.74 : 161,648.49 = 63,421.75 : x - Step 2: Convert to fraction form
117,136.74/161,648.49 = 63,421.75/x - Step 3: Cross multiply
117,136.74x = 161,648.49 × 63,421.75 - Step 4: Simplify right side
117,136.74x = 10,252,030,120.66 - Step 5: Solve for x
x = 10,252,030,120.66/117,136.74 - Step 6: Final answer
x = 87,521.90
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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.