Finding the Fourth Proportional to 135,083.19, 186,408.99 and 77,718.18
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Solution
The fourth proportional to 135,083.19, 186,408.99 and 77,718.18 is: 107,247.74
Step by Step Solution
- Step 1: Write the proportion equation
135,083.19 : 186,408.99 = 77,718.18 : x - Step 2: Convert to fraction form
135,083.19/186,408.99 = 77,718.18/x - Step 3: Cross multiply
135,083.19x = 186,408.99 × 77,718.18 - Step 4: Simplify right side
135,083.19x = 14,487,367,438.44 - Step 5: Solve for x
x = 14,487,367,438.44/135,083.19 - Step 6: Final answer
x = 107,247.74
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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.