Finding the Fourth Proportional to 140,905.71, 194,445.36 and 77,242.14
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Solution
The fourth proportional to 140,905.71, 194,445.36 and 77,242.14 is: 106,591.68
Step by Step Solution
- Step 1: Write the proportion equation
140,905.71 : 194,445.36 = 77,242.14 : x - Step 2: Convert to fraction form
140,905.71/194,445.36 = 77,242.14/x - Step 3: Cross multiply
140,905.71x = 194,445.36 × 77,242.14 - Step 4: Simplify right side
140,905.71x = 15,019,375,719.47 - Step 5: Solve for x
x = 15,019,375,719.47/140,905.71 - Step 6: Final answer
x = 106,591.68
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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.