Finding the Fourth Proportional to 99,243.08, 136,920.99 and 63,454.04
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Solution
The fourth proportional to 99,243.08, 136,920.99 and 63,454.04 is: 87,544.54
Step by Step Solution
- Step 1: Write the proportion equation
99,243.08 : 136,920.99 = 63,454.04 : x - Step 2: Convert to fraction form
99,243.08/136,920.99 = 63,454.04/x - Step 3: Cross multiply
99,243.08x = 136,920.99 × 63,454.04 - Step 4: Simplify right side
99,243.08x = 8,688,189,976.30 - Step 5: Solve for x
x = 8,688,189,976.30/99,243.08 - Step 6: Final answer
x = 87,544.54
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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.