Finding the Fourth Proportional to 128,941,805.80, 193,412,708.70 and 43,841,261.80
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Solution
The fourth proportional to 128,941,805.80, 193,412,708.70 and 43,841,261.80 is: 65,761,892.70
Step by Step Solution
- Step 1: Write the proportion equation
128,941,805.80 : 193,412,708.70 = 43,841,261.80 : x - Step 2: Convert to fraction form
128,941,805.80/193,412,708.70 = 43,841,261.80/x - Step 3: Cross multiply
128,941,805.80x = 193,412,708.70 × 43,841,261.80 - Step 4: Simplify right side
128,941,805.80x = 8,479,457,197,563,837 - Step 5: Solve for x
x = 8,479,457,197,563,837/128,941,805.80 - Step 6: Final answer
x = 65,761,892.70
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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.