Finding the Fourth Proportional to 138,027.42, 190,484.61 and 77,617.08
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Solution
The fourth proportional to 138,027.42, 190,484.61 and 77,617.08 is: 107,115.38
Step by Step Solution
- Step 1: Write the proportion equation
138,027.42 : 190,484.61 = 77,617.08 : x - Step 2: Convert to fraction form
138,027.42/190,484.61 = 77,617.08/x - Step 3: Cross multiply
138,027.42x = 190,484.61 × 77,617.08 - Step 4: Simplify right side
138,027.42x = 14,784,859,213.14 - Step 5: Solve for x
x = 14,784,859,213.14/138,027.42 - Step 6: Final answer
x = 107,115.38
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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.