Finding the Fourth Proportional to 133,129.23, 183,714.81 and 72,696.75
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Solution
The fourth proportional to 133,129.23, 183,714.81 and 72,696.75 is: 100,319.59
Step by Step Solution
- Step 1: Write the proportion equation
133,129.23 : 183,714.81 = 72,696.75 : x - Step 2: Convert to fraction form
133,129.23/183,714.81 = 72,696.75/x - Step 3: Cross multiply
133,129.23x = 183,714.81 × 72,696.75 - Step 4: Simplify right side
133,129.23x = 13,355,469,613.87 - Step 5: Solve for x
x = 13,355,469,613.87/133,129.23 - Step 6: Final answer
x = 100,319.59
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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.