Finding the Fourth Proportional to 133,131.09, 183,714.06 and 72,690.09
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Solution
The fourth proportional to 133,131.09, 183,714.06 and 72,690.09 is: 100,308.59
Step by Step Solution
- Step 1: Write the proportion equation
133,131.09 : 183,714.06 = 72,690.09 : x - Step 2: Convert to fraction form
133,131.09/183,714.06 = 72,690.09/x - Step 3: Cross multiply
133,131.09x = 183,714.06 × 72,690.09 - Step 4: Simplify right side
133,131.09x = 13,354,191,555.67 - Step 5: Solve for x
x = 13,354,191,555.67/133,131.09 - Step 6: Final answer
x = 100,308.59
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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.