Finding the Fourth Proportional to 186,213.71, 256,980.73 and 105,644.63
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Solution
The fourth proportional to 186,213.71, 256,980.73 and 105,644.63 is: 145,792.89
Step by Step Solution
- Step 1: Write the proportion equation
186,213.71 : 256,980.73 = 105,644.63 : x - Step 2: Convert to fraction form
186,213.71/256,980.73 = 105,644.63/x - Step 3: Cross multiply
186,213.71x = 256,980.73 × 105,644.63 - Step 4: Simplify right side
186,213.71x = 27,148,634,137.98 - Step 5: Solve for x
x = 27,148,634,137.98/186,213.71 - Step 6: Final answer
x = 145,792.89
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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.