Finding the Fourth Proportional to 103,679.02, 155,329.64 and 72,022.14
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Solution
The fourth proportional to 103,679.02, 155,329.64 and 72,022.14 is: 107,901.99
Step by Step Solution
- Step 1: Write the proportion equation
103,679.02 : 155,329.64 = 72,022.14 : x - Step 2: Convert to fraction form
103,679.02/155,329.64 = 72,022.14/x - Step 3: Cross multiply
103,679.02x = 155,329.64 × 72,022.14 - Step 4: Simplify right side
103,679.02x = 11,187,173,078.23 - Step 5: Solve for x
x = 11,187,173,078.23/103,679.02 - Step 6: Final answer
x = 107,901.99
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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.