Finding the Fourth Proportional to 138,939.44, 191,802.53 and 93,078.05
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Solution
The fourth proportional to 138,939.44, 191,802.53 and 93,078.05 is: 128,491.99
Step by Step Solution
- Step 1: Write the proportion equation
138,939.44 : 191,802.53 = 93,078.05 : x - Step 2: Convert to fraction form
138,939.44/191,802.53 = 93,078.05/x - Step 3: Cross multiply
138,939.44x = 191,802.53 × 93,078.05 - Step 4: Simplify right side
138,939.44x = 17,852,604,751.15 - Step 5: Solve for x
x = 17,852,604,751.15/138,939.44 - Step 6: Final answer
x = 128,491.99
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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.