Finding the Fourth Proportional to 135,345.18, 186,778.56 and 84,378.51
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Solution
The fourth proportional to 135,345.18, 186,778.56 and 84,378.51 is: 116,443.72
Step by Step Solution
- Step 1: Write the proportion equation
135,345.18 : 186,778.56 = 84,378.51 : x - Step 2: Convert to fraction form
135,345.18/186,778.56 = 84,378.51/x - Step 3: Cross multiply
135,345.18x = 186,778.56 × 84,378.51 - Step 4: Simplify right side
135,345.18x = 15,760,096,434.54 - Step 5: Solve for x
x = 15,760,096,434.54/135,345.18 - Step 6: Final answer
x = 116,443.72
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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.