Finding the Fourth Proportional to 155,964.23, 215,231.13 and 84,344.75
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Solution
The fourth proportional to 155,964.23, 215,231.13 and 84,344.75 is: 116,396.02
Step by Step Solution
- Step 1: Write the proportion equation
155,964.23 : 215,231.13 = 84,344.75 : x - Step 2: Convert to fraction form
155,964.23/215,231.13 = 84,344.75/x - Step 3: Cross multiply
155,964.23x = 215,231.13 × 84,344.75 - Step 4: Simplify right side
155,964.23x = 18,153,615,852.07 - Step 5: Solve for x
x = 18,153,615,852.07/155,964.23 - Step 6: Final answer
x = 116,396.02
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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.