Finding the Fourth Proportional to 121,722.10, 167,959.80 and 68,000.44
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Solution
The fourth proportional to 121,722.10, 167,959.80 and 68,000.44 is: 93,831.28
Step by Step Solution
- Step 1: Write the proportion equation
121,722.10 : 167,959.80 = 68,000.44 : x - Step 2: Convert to fraction form
121,722.10/167,959.80 = 68,000.44/x - Step 3: Cross multiply
121,722.10x = 167,959.80 × 68,000.44 - Step 4: Simplify right side
121,722.10x = 11,421,340,302.31 - Step 5: Solve for x
x = 11,421,340,302.31/121,722.10 - Step 6: Final answer
x = 93,831.28
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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.