Finding the Fourth Proportional to 109,331.36, 163,997.12 and 84,407.84
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Solution
The fourth proportional to 109,331.36, 163,997.12 and 84,407.84 is: 126,611.82
Step by Step Solution
- Step 1: Write the proportion equation
109,331.36 : 163,997.12 = 84,407.84 : x - Step 2: Convert to fraction form
109,331.36/163,997.12 = 84,407.84/x - Step 3: Cross multiply
109,331.36x = 163,997.12 × 84,407.84 - Step 4: Simplify right side
109,331.36x = 13,842,642,665.42 - Step 5: Solve for x
x = 13,842,642,665.42/109,331.36 - Step 6: Final answer
x = 126,611.82
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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.