Finding the Fourth Proportional to 131,279.13, 181,410.44 and 107,397.09
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Solution
The fourth proportional to 131,279.13, 181,410.44 and 107,397.09 is: 148,408.61
Step by Step Solution
- Step 1: Write the proportion equation
131,279.13 : 181,410.44 = 107,397.09 : x - Step 2: Convert to fraction form
131,279.13/181,410.44 = 107,397.09/x - Step 3: Cross multiply
131,279.13x = 181,410.44 × 107,397.09 - Step 4: Simplify right side
131,279.13x = 19,482,952,814.63 - Step 5: Solve for x
x = 19,482,952,814.63/131,279.13 - Step 6: Final answer
x = 148,408.61
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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.