Finding the Fourth Proportional to 163,511.20, 245,266.80 and 121,520.80
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Solution
The fourth proportional to 163,511.20, 245,266.80 and 121,520.80 is: 182,281.20
Step by Step Solution
- Step 1: Write the proportion equation
163,511.20 : 245,266.80 = 121,520.80 : x - Step 2: Convert to fraction form
163,511.20/245,266.80 = 121,520.80/x - Step 3: Cross multiply
163,511.20x = 245,266.80 × 121,520.80 - Step 4: Simplify right side
163,511.20x = 29,805,017,749.44 - Step 5: Solve for x
x = 29,805,017,749.44/163,511.20 - Step 6: Final answer
x = 182,281.20
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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.