Finding the Fourth Proportional to 133,110.74, 183,696.60 and 72,685.21
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Solution
The fourth proportional to 133,110.74, 183,696.60 and 72,685.21 is: 100,307.65
Step by Step Solution
- Step 1: Write the proportion equation
133,110.74 : 183,696.60 = 72,685.21 : x - Step 2: Convert to fraction form
133,110.74/183,696.60 = 72,685.21/x - Step 3: Cross multiply
133,110.74x = 183,696.60 × 72,685.21 - Step 4: Simplify right side
133,110.74x = 13,352,025,947.29 - Step 5: Solve for x
x = 13,352,025,947.29/133,110.74 - Step 6: Final answer
x = 100,307.65
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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.