Finding the Fourth Proportional to 135,343.64, 186,774.58 and 74,918.45
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Solution
The fourth proportional to 135,343.64, 186,774.58 and 74,918.45 is: 103,387.66
Step by Step Solution
- Step 1: Write the proportion equation
135,343.64 : 186,774.58 = 74,918.45 : x - Step 2: Convert to fraction form
135,343.64/186,774.58 = 74,918.45/x - Step 3: Cross multiply
135,343.64x = 186,774.58 × 74,918.45 - Step 4: Simplify right side
135,343.64x = 13,992,862,593.59 - Step 5: Solve for x
x = 13,992,862,593.59/135,343.64 - Step 6: Final answer
x = 103,387.66
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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.