Finding the Fourth Proportional to 172,586.08, 258,979.74 and 72,740.08
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Solution
The fourth proportional to 172,586.08, 258,979.74 and 72,740.08 is: 109,152.53
Step by Step Solution
- Step 1: Write the proportion equation
172,586.08 : 258,979.74 = 72,740.08 : x - Step 2: Convert to fraction form
172,586.08/258,979.74 = 72,740.08/x - Step 3: Cross multiply
172,586.08x = 258,979.74 × 72,740.08 - Step 4: Simplify right side
172,586.08x = 18,838,207,005.98 - Step 5: Solve for x
x = 18,838,207,005.98/172,586.08 - Step 6: Final answer
x = 109,152.53
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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.