Finding the Fourth Proportional to 186,415.80, 279,623.70 and 81,439.80
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Solution
The fourth proportional to 186,415.80, 279,623.70 and 81,439.80 is: 122,159.70
Step by Step Solution
- Step 1: Write the proportion equation
186,415.80 : 279,623.70 = 81,439.80 : x - Step 2: Convert to fraction form
186,415.80/279,623.70 = 81,439.80/x - Step 3: Cross multiply
186,415.80x = 279,623.70 × 81,439.80 - Step 4: Simplify right side
186,415.80x = 22,772,498,203.26 - Step 5: Solve for x
x = 22,772,498,203.26/186,415.80 - Step 6: Final answer
x = 122,159.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.