Finding the Fourth Proportional to 103,093.05, 142,336.95 and 79,176.99
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Solution
The fourth proportional to 103,093.05, 142,336.95 and 79,176.99 is: 109,316.89
Step by Step Solution
- Step 1: Write the proportion equation
103,093.05 : 142,336.95 = 79,176.99 : x - Step 2: Convert to fraction form
103,093.05/142,336.95 = 79,176.99/x - Step 3: Cross multiply
103,093.05x = 142,336.95 × 79,176.99 - Step 4: Simplify right side
103,093.05x = 11,269,811,266.78 - Step 5: Solve for x
x = 11,269,811,266.78/103,093.05 - Step 6: Final answer
x = 109,316.89
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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.