Finding the Fourth Proportional to 135,044.72, 186,360.95 and 74,615.38
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Solution
The fourth proportional to 135,044.72, 186,360.95 and 74,615.38 is: 102,968.80
Step by Step Solution
- Step 1: Write the proportion equation
135,044.72 : 186,360.95 = 74,615.38 : x - Step 2: Convert to fraction form
135,044.72/186,360.95 = 74,615.38/x - Step 3: Cross multiply
135,044.72x = 186,360.95 × 74,615.38 - Step 4: Simplify right side
135,044.72x = 13,905,392,822.05 - Step 5: Solve for x
x = 13,905,392,822.05/135,044.72 - Step 6: Final answer
x = 102,968.80
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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.