Finding the Fourth Proportional to 128,270.97, 177,007.41 and 74,547.32
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Solution
The fourth proportional to 128,270.97, 177,007.41 and 74,547.32 is: 102,871.50
Step by Step Solution
- Step 1: Write the proportion equation
128,270.97 : 177,007.41 = 74,547.32 : x - Step 2: Convert to fraction form
128,270.97/177,007.41 = 74,547.32/x - Step 3: Cross multiply
128,270.97x = 177,007.41 × 74,547.32 - Step 4: Simplify right side
128,270.97x = 13,195,427,150.60 - Step 5: Solve for x
x = 13,195,427,150.60/128,270.97 - Step 6: Final answer
x = 102,871.50
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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.