Finding the Fourth Proportional to 122,320.80, 183,481.20 and 117,655.20
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Solution
The fourth proportional to 122,320.80, 183,481.20 and 117,655.20 is: 176,482.80
Step by Step Solution
- Step 1: Write the proportion equation
122,320.80 : 183,481.20 = 117,655.20 : x - Step 2: Convert to fraction form
122,320.80/183,481.20 = 117,655.20/x - Step 3: Cross multiply
122,320.80x = 183,481.20 × 117,655.20 - Step 4: Simplify right side
122,320.80x = 21,587,517,282.24 - Step 5: Solve for x
x = 21,587,517,282.24/122,320.80 - Step 6: Final answer
x = 176,482.80
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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.