Finding the Fourth Proportional to 138,077.94, 207,117.11 and 42,015.99
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Solution
The fourth proportional to 138,077.94, 207,117.11 and 42,015.99 is: 63,024.05
Step by Step Solution
- Step 1: Write the proportion equation
138,077.94 : 207,117.11 = 42,015.99 : x - Step 2: Convert to fraction form
138,077.94/207,117.11 = 42,015.99/x - Step 3: Cross multiply
138,077.94x = 207,117.11 × 42,015.99 - Step 4: Simplify right side
138,077.94x = 8,702,230,422.59 - Step 5: Solve for x
x = 8,702,230,422.59/138,077.94 - Step 6: Final answer
x = 63,024.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.