Finding the Fourth Proportional to 155,859.99, 215,086.75 and 84,239.99
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Solution
The fourth proportional to 155,859.99, 215,086.75 and 84,239.99 is: 116,251.17
Step by Step Solution
- Step 1: Write the proportion equation
155,859.99 : 215,086.75 = 84,239.99 : x - Step 2: Convert to fraction form
155,859.99/215,086.75 = 84,239.99/x - Step 3: Cross multiply
155,859.99x = 215,086.75 × 84,239.99 - Step 4: Simplify right side
155,859.99x = 18,118,905,669.13 - Step 5: Solve for x
x = 18,118,905,669.13/155,859.99 - Step 6: Final answer
x = 116,251.17
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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.