Finding the Fourth Proportional to 128,734,905.20, 193,326,306.60 and 68,268,729.20
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Solution
The fourth proportional to 128,734,905.20, 193,326,306.60 and 68,268,729.20 is: 102,521,854.91
Step by Step Solution
- Step 1: Write the proportion equation
128,734,905.20 : 193,326,306.60 = 68,268,729.20 : x - Step 2: Convert to fraction form
128,734,905.20/193,326,306.60 = 68,268,729.20/x - Step 3: Cross multiply
128,734,905.20x = 193,326,306.60 × 68,268,729.20 - Step 4: Simplify right side
128,734,905.20x = 13,198,141,272,511,572 - Step 5: Solve for x
x = 13,198,141,272,511,572/128,734,905.20 - Step 6: Final answer
x = 102,521,854.91
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.