Finding the Fourth Proportional to 157,942.20, 217,890.14 and 94,242.98
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Solution
The fourth proportional to 157,942.20, 217,890.14 and 94,242.98 is: 130,013.49
Step by Step Solution
- Step 1: Write the proportion equation
157,942.20 : 217,890.14 = 94,242.98 : x - Step 2: Convert to fraction form
157,942.20/217,890.14 = 94,242.98/x - Step 3: Cross multiply
157,942.20x = 217,890.14 × 94,242.98 - Step 4: Simplify right side
157,942.20x = 20,534,616,106.22 - Step 5: Solve for x
x = 20,534,616,106.22/157,942.20 - Step 6: Final answer
x = 130,013.49
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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.