Finding the Fourth Proportional to 99,793.20, 149,689.80 and 73,549.20
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Solution
The fourth proportional to 99,793.20, 149,689.80 and 73,549.20 is: 110,323.80
Step by Step Solution
- Step 1: Write the proportion equation
99,793.20 : 149,689.80 = 73,549.20 : x - Step 2: Convert to fraction form
99,793.20/149,689.80 = 73,549.20/x - Step 3: Cross multiply
99,793.20x = 149,689.80 × 73,549.20 - Step 4: Simplify right side
99,793.20x = 11,009,565,038.16 - Step 5: Solve for x
x = 11,009,565,038.16/99,793.20 - Step 6: Final answer
x = 110,323.80
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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.