Finding the Fourth Proportional to 157,864.48, 217,850.24 and 86,242.68
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Solution
The fourth proportional to 157,864.48, 217,850.24 and 86,242.68 is: 119,013.40
Step by Step Solution
- Step 1: Write the proportion equation
157,864.48 : 217,850.24 = 86,242.68 : x - Step 2: Convert to fraction form
157,864.48/217,850.24 = 86,242.68/x - Step 3: Cross multiply
157,864.48x = 217,850.24 × 86,242.68 - Step 4: Simplify right side
157,864.48x = 18,787,988,536.24 - Step 5: Solve for x
x = 18,787,988,536.24/157,864.48 - Step 6: Final answer
x = 119,013.40
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1.5x scale
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.