Finding the Fourth Proportional to 105,120.91, 157,702.13 and 38,561.65
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Solution
The fourth proportional to 105,120.91, 157,702.13 and 38,561.65 is: 57,850.09
Step by Step Solution
- Step 1: Write the proportion equation
105,120.91 : 157,702.13 = 38,561.65 : x - Step 2: Convert to fraction form
105,120.91/157,702.13 = 38,561.65/x - Step 3: Cross multiply
105,120.91x = 157,702.13 × 38,561.65 - Step 4: Simplify right side
105,120.91x = 6,081,254,341.31 - Step 5: Solve for x
x = 6,081,254,341.31/105,120.91 - Step 6: Final answer
x = 57,850.09
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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.