Finding the Fourth Proportional to 138,775.93, 191,512.19 and 75,115.09
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Solution
The fourth proportional to 138,775.93, 191,512.19 and 75,115.09 is: 103,659.59
Step by Step Solution
- Step 1: Write the proportion equation
138,775.93 : 191,512.19 = 75,115.09 : x - Step 2: Convert to fraction form
138,775.93/191,512.19 = 75,115.09/x - Step 3: Cross multiply
138,775.93x = 191,512.19 × 75,115.09 - Step 4: Simplify right side
138,775.93x = 14,385,455,387.95 - Step 5: Solve for x
x = 14,385,455,387.95/138,775.93 - Step 6: Final answer
x = 103,659.59
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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.