Finding the Fourth Proportional to 214,727,900.80, 321,839,908.80 and 91,905,980.80
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Solution
The fourth proportional to 214,727,900.80, 321,839,908.80 and 91,905,980.80 is: 137,751,136.99
Step by Step Solution
- Step 1: Write the proportion equation
214,727,900.80 : 321,839,908.80 = 91,905,980.80 : x - Step 2: Convert to fraction form
214,727,900.80/321,839,908.80 = 91,905,980.80/x - Step 3: Cross multiply
214,727,900.80x = 321,839,908.80 × 91,905,980.80 - Step 4: Simplify right side
214,727,900.80x = 29,579,012,478,846,552 - Step 5: Solve for x
x = 29,579,012,478,846,552/214,727,900.80 - Step 6: Final answer
x = 137,751,136.99
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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.