Finding the Fourth Proportional to 133,112.18, 183,693.90 and 72,682.79
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Solution
The fourth proportional to 133,112.18, 183,693.90 and 72,682.79 is: 100,301.75
Step by Step Solution
- Step 1: Write the proportion equation
133,112.18 : 183,693.90 = 72,682.79 : x - Step 2: Convert to fraction form
133,112.18/183,693.90 = 72,682.79/x - Step 3: Cross multiply
133,112.18x = 183,693.90 × 72,682.79 - Step 4: Simplify right side
133,112.18x = 13,351,385,157.98 - Step 5: Solve for x
x = 13,351,385,157.98/133,112.18 - Step 6: Final answer
x = 100,301.75
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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.