Finding the Fourth Proportional to 145,726,657.80, 218,450,018.70 and 84,252,712.20
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Solution
The fourth proportional to 145,726,657.80, 218,450,018.70 and 84,252,712.20 is: 126,298,144.99
Step by Step Solution
- Step 1: Write the proportion equation
145,726,657.80 : 218,450,018.70 = 84,252,712.20 : x - Step 2: Convert to fraction form
145,726,657.80/218,450,018.70 = 84,252,712.20/x - Step 3: Cross multiply
145,726,657.80x = 218,450,018.70 × 84,252,712.20 - Step 4: Simplify right side
145,726,657.80x = 18,405,006,555,615,716 - Step 5: Solve for x
x = 18,405,006,555,615,716/145,726,657.80 - Step 6: Final answer
x = 126,298,144.99
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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.