Finding the Fourth Proportional to 105,423.41, 157,960.16 and 74,193.05
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Solution
The fourth proportional to 105,423.41, 157,960.16 and 74,193.05 is: 111,166.45
Step by Step Solution
- Step 1: Write the proportion equation
105,423.41 : 157,960.16 = 74,193.05 : x - Step 2: Convert to fraction form
105,423.41/157,960.16 = 74,193.05/x - Step 3: Cross multiply
105,423.41x = 157,960.16 × 74,193.05 - Step 4: Simplify right side
105,423.41x = 11,719,546,351.05 - Step 5: Solve for x
x = 11,719,546,351.05/105,423.41 - Step 6: Final answer
x = 111,166.45
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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.