Finding the Fourth Proportional to 163,580.72, 225,749.40 and 91,983.20
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Solution
The fourth proportional to 163,580.72, 225,749.40 and 91,983.20 is: 126,941.32
Step by Step Solution
- Step 1: Write the proportion equation
163,580.72 : 225,749.40 = 91,983.20 : x - Step 2: Convert to fraction form
163,580.72/225,749.40 = 91,983.20/x - Step 3: Cross multiply
163,580.72x = 225,749.40 × 91,983.20 - Step 4: Simplify right side
163,580.72x = 20,765,152,210.08 - Step 5: Solve for x
x = 20,765,152,210.08/163,580.72 - Step 6: Final answer
x = 126,941.32
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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.