Finding the Fourth Proportional to 138,841.83, 191,603.09 and 75,180.99
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Solution
The fourth proportional to 138,841.83, 191,603.09 and 75,180.99 is: 103,750.50
Step by Step Solution
- Step 1: Write the proportion equation
138,841.83 : 191,603.09 = 75,180.99 : x - Step 2: Convert to fraction form
138,841.83/191,603.09 = 75,180.99/x - Step 3: Cross multiply
138,841.83x = 191,603.09 × 75,180.99 - Step 4: Simplify right side
138,841.83x = 14,404,909,617.35 - Step 5: Solve for x
x = 14,404,909,617.35/138,841.83 - Step 6: Final answer
x = 103,750.50
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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.