Finding the Fourth Proportional to 252,110.76, 347,920.14 and 138,940.80
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Solution
The fourth proportional to 252,110.76, 347,920.14 and 138,940.80 is: 191,742.32
Step by Step Solution
- Step 1: Write the proportion equation
252,110.76 : 347,920.14 = 138,940.80 : x - Step 2: Convert to fraction form
252,110.76/347,920.14 = 138,940.80/x - Step 3: Cross multiply
252,110.76x = 347,920.14 × 138,940.80 - Step 4: Simplify right side
252,110.76x = 48,340,302,587.71 - Step 5: Solve for x
x = 48,340,302,587.71/252,110.76 - Step 6: Final answer
x = 191,742.32
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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.