Finding the Fourth Proportional to 135,777,198.60, 203,797,329.56 and 128,403,454.72
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Solution
The fourth proportional to 135,777,198.60, 203,797,329.56 and 128,403,454.72 is: 192,729,570.56
Step by Step Solution
- Step 1: Write the proportion equation
135,777,198.60 : 203,797,329.56 = 128,403,454.72 : x - Step 2: Convert to fraction form
135,777,198.60/203,797,329.56 = 128,403,454.72/x - Step 3: Cross multiply
135,777,198.60x = 203,797,329.56 × 128,403,454.72 - Step 4: Simplify right side
135,777,198.60x = 26,168,281,178,214,376 - Step 5: Solve for x
x = 26,168,281,178,214,376/135,777,198.60 - Step 6: Final answer
x = 192,729,570.56
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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.