Finding the Fourth Proportional to 120,135.60, 168,364.80 and 120,135.60
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Solution
The fourth proportional to 120,135.60, 168,364.80 and 120,135.60 is: 168,364.80
Step by Step Solution
- Step 1: Write the proportion equation
120,135.60 : 168,364.80 = 120,135.60 : x - Step 2: Convert to fraction form
120,135.60/168,364.80 = 120,135.60/x - Step 3: Cross multiply
120,135.60x = 168,364.80 × 120,135.60 - Step 4: Simplify right side
120,135.60x = 20,226,606,266.88 - Step 5: Solve for x
x = 20,226,606,266.88/120,135.60 - Step 6: Final answer
x = 168,364.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.