Finding the Fourth Proportional to 157,908.36, 217,904.36 and 86,288.97
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Solution
The fourth proportional to 157,908.36, 217,904.36 and 86,288.97 is: 119,073.76
Step by Step Solution
- Step 1: Write the proportion equation
157,908.36 : 217,904.36 = 86,288.97 : x - Step 2: Convert to fraction form
157,908.36/217,904.36 = 86,288.97/x - Step 3: Cross multiply
157,908.36x = 217,904.36 × 86,288.97 - Step 4: Simplify right side
157,908.36x = 18,802,742,351.46 - Step 5: Solve for x
x = 18,802,742,351.46/157,908.36 - Step 6: Final answer
x = 119,073.76
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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.