Finding the Fourth Proportional to 135,122.13, 186,460.43 and 74,689.16
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Solution
The fourth proportional to 135,122.13, 186,460.43 and 74,689.16 is: 103,066.55
Step by Step Solution
- Step 1: Write the proportion equation
135,122.13 : 186,460.43 = 74,689.16 : x - Step 2: Convert to fraction form
135,122.13/186,460.43 = 74,689.16/x - Step 3: Cross multiply
135,122.13x = 186,460.43 × 74,689.16 - Step 4: Simplify right side
135,122.13x = 13,926,571,584.19 - Step 5: Solve for x
x = 13,926,571,584.19/135,122.13 - Step 6: Final answer
x = 103,066.55
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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.