Finding the Fourth Proportional to 168,486,412.80, 252,729,619.20 and 91,958,908.80
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Solution
The fourth proportional to 168,486,412.80, 252,729,619.20 and 91,958,908.80 is: 137,938,363.20
Step by Step Solution
- Step 1: Write the proportion equation
168,486,412.80 : 252,729,619.20 = 91,958,908.80 : x - Step 2: Convert to fraction form
168,486,412.80/252,729,619.20 = 91,958,908.80/x - Step 3: Cross multiply
168,486,412.80x = 252,729,619.20 × 91,958,908.80 - Step 4: Simplify right side
168,486,412.80x = 23,240,740,003,071,528 - Step 5: Solve for x
x = 23,240,740,003,071,528/168,486,412.80 - Step 6: Final answer
x = 137,938,363.20
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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.