Finding the Fourth Proportional to 125,136.21, 172,688.19 and 67,775.66
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Solution
The fourth proportional to 125,136.21, 172,688.19 and 67,775.66 is: 93,530.52
Step by Step Solution
- Step 1: Write the proportion equation
125,136.21 : 172,688.19 = 67,775.66 : x - Step 2: Convert to fraction form
125,136.21/172,688.19 = 67,775.66/x - Step 3: Cross multiply
125,136.21x = 172,688.19 × 67,775.66 - Step 4: Simplify right side
125,136.21x = 11,704,055,581.44 - Step 5: Solve for x
x = 11,704,055,581.44/125,136.21 - Step 6: Final answer
x = 93,530.52
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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.