Finding the Fourth Proportional to 134,837.20, 186,071.90 and 74,407.05
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Solution
The fourth proportional to 134,837.20, 186,071.90 and 74,407.05 is: 102,679.84
Step by Step Solution
- Step 1: Write the proportion equation
134,837.20 : 186,071.90 = 74,407.05 : x - Step 2: Convert to fraction form
134,837.20/186,071.90 = 74,407.05/x - Step 3: Cross multiply
134,837.20x = 186,071.90 × 74,407.05 - Step 4: Simplify right side
134,837.20x = 13,845,061,352.91 - Step 5: Solve for x
x = 13,845,061,352.91/134,837.20 - Step 6: Final answer
x = 102,679.84
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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.