Finding the Fourth Proportional to 99,745.20, 149,617.80 and 73,501.20
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Solution
The fourth proportional to 99,745.20, 149,617.80 and 73,501.20 is: 110,251.80
Step by Step Solution
- Step 1: Write the proportion equation
99,745.20 : 149,617.80 = 73,501.20 : x - Step 2: Convert to fraction form
99,745.20/149,617.80 = 73,501.20/x - Step 3: Cross multiply
99,745.20x = 149,617.80 × 73,501.20 - Step 4: Simplify right side
99,745.20x = 10,997,087,841.36 - Step 5: Solve for x
x = 10,997,087,841.36/99,745.20 - Step 6: Final answer
x = 110,251.80
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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.