Finding the Fourth Proportional to 130,959.41, 180,725.25 and 74,371.19
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Solution
The fourth proportional to 130,959.41, 180,725.25 and 74,371.19 is: 102,632.96
Step by Step Solution
- Step 1: Write the proportion equation
130,959.41 : 180,725.25 = 74,371.19 : x - Step 2: Convert to fraction form
130,959.41/180,725.25 = 74,371.19/x - Step 3: Cross multiply
130,959.41x = 180,725.25 × 74,371.19 - Step 4: Simplify right side
130,959.41x = 13,440,751,001.92 - Step 5: Solve for x
x = 13,440,751,001.92/130,959.41 - Step 6: Final answer
x = 102,632.96
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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.