Finding the Fourth Proportional to 121,824.10, 168,169.08 and 74,092.78
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Solution
The fourth proportional to 121,824.10, 168,169.08 and 74,092.78 is: 102,279.55
Step by Step Solution
- Step 1: Write the proportion equation
121,824.10 : 168,169.08 = 74,092.78 : x - Step 2: Convert to fraction form
121,824.10/168,169.08 = 74,092.78/x - Step 3: Cross multiply
121,824.10x = 168,169.08 × 74,092.78 - Step 4: Simplify right side
121,824.10x = 12,460,114,647.24 - Step 5: Solve for x
x = 12,460,114,647.24/121,824.10 - Step 6: Final answer
x = 102,279.55
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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.