Finding the Fourth Proportional to 133,119.82, 183,712.79 and 72,696.08
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Solution
The fourth proportional to 133,119.82, 183,712.79 and 72,696.08 is: 100,324.66
Step by Step Solution
- Step 1: Write the proportion equation
133,119.82 : 183,712.79 = 72,696.08 : x - Step 2: Convert to fraction form
133,119.82/183,712.79 = 72,696.08/x - Step 3: Cross multiply
133,119.82x = 183,712.79 × 72,696.08 - Step 4: Simplify right side
133,119.82x = 13,355,200,319.89 - Step 5: Solve for x
x = 13,355,200,319.89/133,119.82 - Step 6: Final answer
x = 100,324.66
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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.