Finding the Fourth Proportional to 136,809.24, 188,763.36 and 80,209.68
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Solution
The fourth proportional to 136,809.24, 188,763.36 and 80,209.68 is: 110,669.78
Step by Step Solution
- Step 1: Write the proportion equation
136,809.24 : 188,763.36 = 80,209.68 : x - Step 2: Convert to fraction form
136,809.24/188,763.36 = 80,209.68/x - Step 3: Cross multiply
136,809.24x = 188,763.36 × 80,209.68 - Step 4: Simplify right side
136,809.24x = 15,140,648,701.32 - Step 5: Solve for x
x = 15,140,648,701.32/136,809.24 - Step 6: Final answer
x = 110,669.78
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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.