Finding the Fourth Proportional to 157,964.62, 217,992.64 and 89,980.62
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Solution
The fourth proportional to 157,964.62, 217,992.64 and 89,980.62 is: 124,174.09
Step by Step Solution
- Step 1: Write the proportion equation
157,964.62 : 217,992.64 = 89,980.62 : x - Step 2: Convert to fraction form
157,964.62/217,992.64 = 89,980.62/x - Step 3: Cross multiply
157,964.62x = 217,992.64 × 89,980.62 - Step 4: Simplify right side
157,964.62x = 19,615,112,902.64 - Step 5: Solve for x
x = 19,615,112,902.64/157,964.62 - Step 6: Final answer
x = 124,174.09
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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.