Finding the Fourth Proportional to 122,187.20, 183,280.80 and 107,412.80
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Solution
The fourth proportional to 122,187.20, 183,280.80 and 107,412.80 is: 161,119.20
Step by Step Solution
- Step 1: Write the proportion equation
122,187.20 : 183,280.80 = 107,412.80 : x - Step 2: Convert to fraction form
122,187.20/183,280.80 = 107,412.80/x - Step 3: Cross multiply
122,187.20x = 183,280.80 × 107,412.80 - Step 4: Simplify right side
122,187.20x = 19,686,703,914.24 - Step 5: Solve for x
x = 19,686,703,914.24/122,187.20 - Step 6: Final answer
x = 161,119.20
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1.5x scale
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.