Finding the Fourth Proportional to 203,005.40, 280,203.68 and 118,138.80
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Solution
The fourth proportional to 203,005.40, 280,203.68 and 118,138.80 is: 163,064.27
Step by Step Solution
- Step 1: Write the proportion equation
203,005.40 : 280,203.68 = 118,138.80 : x - Step 2: Convert to fraction form
203,005.40/280,203.68 = 118,138.80/x - Step 3: Cross multiply
203,005.40x = 280,203.68 × 118,138.80 - Step 4: Simplify right side
203,005.40x = 33,102,926,510.78 - Step 5: Solve for x
x = 33,102,926,510.78/203,005.40 - Step 6: Final answer
x = 163,064.27
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1.5x scale
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.