Finding the Fourth Proportional to 112,630.08, 155,491.20 and 76,873.44
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Solution
The fourth proportional to 112,630.08, 155,491.20 and 76,873.44 is: 106,127.45
Step by Step Solution
- Step 1: Write the proportion equation
112,630.08 : 155,491.20 = 76,873.44 : x - Step 2: Convert to fraction form
112,630.08/155,491.20 = 76,873.44/x - Step 3: Cross multiply
112,630.08x = 155,491.20 × 76,873.44 - Step 4: Simplify right side
112,630.08x = 11,953,143,433.73 - Step 5: Solve for x
x = 11,953,143,433.73/112,630.08 - Step 6: Final answer
x = 106,127.45
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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.