Finding the Fourth Proportional to 133,109.84, 183,699.01 and 72,686.09
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Solution
The fourth proportional to 133,109.84, 183,699.01 and 72,686.09 is: 100,310.86
Step by Step Solution
- Step 1: Write the proportion equation
133,109.84 : 183,699.01 = 72,686.09 : x - Step 2: Convert to fraction form
133,109.84/183,699.01 = 72,686.09/x - Step 3: Cross multiply
133,109.84x = 183,699.01 × 72,686.09 - Step 4: Simplify right side
133,109.84x = 13,352,361,673.56 - Step 5: Solve for x
x = 13,352,361,673.56/133,109.84 - Step 6: Final answer
x = 100,310.86
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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.