Finding the Fourth Proportional to 155,073.88, 214,213.17 and 121,507.08
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Solution
The fourth proportional to 155,073.88, 214,213.17 and 121,507.08 is: 167,845.27
Step by Step Solution
- Step 1: Write the proportion equation
155,073.88 : 214,213.17 = 121,507.08 : x - Step 2: Convert to fraction form
155,073.88/214,213.17 = 121,507.08/x - Step 3: Cross multiply
155,073.88x = 214,213.17 × 121,507.08 - Step 4: Simplify right side
155,073.88x = 26,028,416,784.24 - Step 5: Solve for x
x = 26,028,416,784.24/155,073.88 - Step 6: Final answer
x = 167,845.27
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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.