Finding the Fourth Proportional to 138,746.21, 191,470.26 and 75,083.99
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Solution
The fourth proportional to 138,746.21, 191,470.26 and 75,083.99 is: 103,616.17
Step by Step Solution
- Step 1: Write the proportion equation
138,746.21 : 191,470.26 = 75,083.99 : x - Step 2: Convert to fraction form
138,746.21/191,470.26 = 75,083.99/x - Step 3: Cross multiply
138,746.21x = 191,470.26 × 75,083.99 - Step 4: Simplify right side
138,746.21x = 14,376,351,087.14 - Step 5: Solve for x
x = 14,376,351,087.14/138,746.21 - Step 6: Final answer
x = 103,616.17
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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.