Finding the Fourth Proportional to 153,728.06, 230,662.14 and 78,900.75
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Solution
The fourth proportional to 153,728.06, 230,662.14 and 78,900.75 is: 118,387.08
Step by Step Solution
- Step 1: Write the proportion equation
153,728.06 : 230,662.14 = 78,900.75 : x - Step 2: Convert to fraction form
153,728.06/230,662.14 = 78,900.75/x - Step 3: Cross multiply
153,728.06x = 230,662.14 × 78,900.75 - Step 4: Simplify right side
153,728.06x = 18,199,415,842.61 - Step 5: Solve for x
x = 18,199,415,842.61/153,728.06 - Step 6: Final answer
x = 118,387.08
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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.