Finding the Fourth Proportional to 151,724.88, 209,478.96 and 135,781.92
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Solution
The fourth proportional to 151,724.88, 209,478.96 and 135,781.92 is: 187,467.31
Step by Step Solution
- Step 1: Write the proportion equation
151,724.88 : 209,478.96 = 135,781.92 : x - Step 2: Convert to fraction form
151,724.88/209,478.96 = 135,781.92/x - Step 3: Cross multiply
151,724.88x = 209,478.96 × 135,781.92 - Step 4: Simplify right side
151,724.88x = 28,443,455,388.40 - Step 5: Solve for x
x = 28,443,455,388.40/151,724.88 - Step 6: Final answer
x = 187,467.31
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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.