Finding the Fourth Proportional to 139,914.92, 193,083.24 and 79,488.88
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Solution
The fourth proportional to 139,914.92, 193,083.24 and 79,488.88 is: 109,695.02
Step by Step Solution
- Step 1: Write the proportion equation
139,914.92 : 193,083.24 = 79,488.88 : x - Step 2: Convert to fraction form
139,914.92/193,083.24 = 79,488.88/x - Step 3: Cross multiply
139,914.92x = 193,083.24 × 79,488.88 - Step 4: Simplify right side
139,914.92x = 15,347,970,136.13 - Step 5: Solve for x
x = 15,347,970,136.13/139,914.92 - Step 6: Final answer
x = 109,695.02
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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.