Finding the Fourth Proportional to 135,538.74, 187,114.26 and 105,256.08
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Solution
The fourth proportional to 135,538.74, 187,114.26 and 105,256.08 is: 145,308.37
Step by Step Solution
- Step 1: Write the proportion equation
135,538.74 : 187,114.26 = 105,256.08 : x - Step 2: Convert to fraction form
135,538.74/187,114.26 = 105,256.08/x - Step 3: Cross multiply
135,538.74x = 187,114.26 × 105,256.08 - Step 4: Simplify right side
135,538.74x = 19,694,913,519.70 - Step 5: Solve for x
x = 19,694,913,519.70/135,538.74 - Step 6: Final answer
x = 145,308.37
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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.