Finding the Fourth Proportional to 190,412.28, 262,768.88 and 105,534.80
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Solution
The fourth proportional to 190,412.28, 262,768.88 and 105,534.80 is: 145,637.99
Step by Step Solution
- Step 1: Write the proportion equation
190,412.28 : 262,768.88 = 105,534.80 : x - Step 2: Convert to fraction form
190,412.28/262,768.88 = 105,534.80/x - Step 3: Cross multiply
190,412.28x = 262,768.88 × 105,534.80 - Step 4: Simplify right side
190,412.28x = 27,731,261,197.02 - Step 5: Solve for x
x = 27,731,261,197.02/190,412.28 - Step 6: Final answer
x = 145,637.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.