Finding the Fourth Proportional to 128,537.96, 177,382.60 and 70,394.44
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Solution
The fourth proportional to 128,537.96, 177,382.60 and 70,394.44 is: 97,144.45
Step by Step Solution
- Step 1: Write the proportion equation
128,537.96 : 177,382.60 = 70,394.44 : x - Step 2: Convert to fraction form
128,537.96/177,382.60 = 70,394.44/x - Step 3: Cross multiply
128,537.96x = 177,382.60 × 70,394.44 - Step 4: Simplify right side
128,537.96x = 12,486,748,792.74 - Step 5: Solve for x
x = 12,486,748,792.74/128,537.96 - Step 6: Final answer
x = 97,144.45
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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.