Finding the Fourth Proportional to 120,630.84, 180,946.28 and 82,642.65
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Solution
The fourth proportional to 120,630.84, 180,946.28 and 82,642.65 is: 123,963.99
Step by Step Solution
- Step 1: Write the proportion equation
120,630.84 : 180,946.28 = 82,642.65 : x - Step 2: Convert to fraction form
120,630.84/180,946.28 = 82,642.65/x - Step 3: Cross multiply
120,630.84x = 180,946.28 × 82,642.65 - Step 4: Simplify right side
120,630.84x = 14,953,879,673.63 - Step 5: Solve for x
x = 14,953,879,673.63/120,630.84 - Step 6: Final answer
x = 123,963.99
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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.