Finding the Fourth Proportional to 128,241.23, 176,994.41 and 86,829.44
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Solution
The fourth proportional to 128,241.23, 176,994.41 and 86,829.44 is: 119,839.19
Step by Step Solution
- Step 1: Write the proportion equation
128,241.23 : 176,994.41 = 86,829.44 : x - Step 2: Convert to fraction form
128,241.23/176,994.41 = 86,829.44/x - Step 3: Cross multiply
128,241.23x = 176,994.41 × 86,829.44 - Step 4: Simplify right side
128,241.23x = 15,368,324,184.31 - Step 5: Solve for x
x = 15,368,324,184.31/128,241.23 - Step 6: Final answer
x = 119,839.19
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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.