Finding the Fourth Proportional to 135,072.42, 186,390.66 and 74,642.50
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Solution
The fourth proportional to 135,072.42, 186,390.66 and 74,642.50 is: 103,001.52
Step by Step Solution
- Step 1: Write the proportion equation
135,072.42 : 186,390.66 = 74,642.50 : x - Step 2: Convert to fraction form
135,072.42/186,390.66 = 74,642.50/x - Step 3: Cross multiply
135,072.42x = 186,390.66 × 74,642.50 - Step 4: Simplify right side
135,072.42x = 13,912,664,839.05 - Step 5: Solve for x
x = 13,912,664,839.05/135,072.42 - Step 6: Final answer
x = 103,001.52
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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.