Finding the Fourth Proportional to 109,400.84, 164,163.51 and 87,354.31
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Solution
The fourth proportional to 109,400.84, 164,163.51 and 87,354.31 is: 131,081.17
Step by Step Solution
- Step 1: Write the proportion equation
109,400.84 : 164,163.51 = 87,354.31 : x - Step 2: Convert to fraction form
109,400.84/164,163.51 = 87,354.31/x - Step 3: Cross multiply
109,400.84x = 164,163.51 × 87,354.31 - Step 4: Simplify right side
109,400.84x = 14,340,390,143.23 - Step 5: Solve for x
x = 14,340,390,143.23/109,400.84 - Step 6: Final answer
x = 131,081.17
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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.