Finding the Fourth Proportional to 128,405,458.17, 192,567,727.62 and 42,123,759.21
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Solution
The fourth proportional to 128,405,458.17, 192,567,727.62 and 42,123,759.21 is: 63,172,365.92
Step by Step Solution
- Step 1: Write the proportion equation
128,405,458.17 : 192,567,727.62 = 42,123,759.21 : x - Step 2: Convert to fraction form
128,405,458.17/192,567,727.62 = 42,123,759.21/x - Step 3: Cross multiply
128,405,458.17x = 192,567,727.62 × 42,123,759.21 - Step 4: Simplify right side
128,405,458.17x = 8,111,676,589,881,747 - Step 5: Solve for x
x = 8,111,676,589,881,747/128,405,458.17 - Step 6: Final answer
x = 63,172,365.92
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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.