Finding the Fourth Proportional to 136,809.60, 205,214.40 and 99,193.20
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Solution
The fourth proportional to 136,809.60, 205,214.40 and 99,193.20 is: 148,789.80
Step by Step Solution
- Step 1: Write the proportion equation
136,809.60 : 205,214.40 = 99,193.20 : x - Step 2: Convert to fraction form
136,809.60/205,214.40 = 99,193.20/x - Step 3: Cross multiply
136,809.60x = 205,214.40 × 99,193.20 - Step 4: Simplify right side
136,809.60x = 20,355,873,022.08 - Step 5: Solve for x
x = 20,355,873,022.08/136,809.60 - Step 6: Final answer
x = 148,789.80
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Similar ratio
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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.