Finding the Fourth Proportional to 135,395.60, 186,851.77 and 74,966.24
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Solution
The fourth proportional to 135,395.60, 186,851.77 and 74,966.24 is: 103,456.65
Step by Step Solution
- Step 1: Write the proportion equation
135,395.60 : 186,851.77 = 74,966.24 : x - Step 2: Convert to fraction form
135,395.60/186,851.77 = 74,966.24/x - Step 3: Cross multiply
135,395.60x = 186,851.77 × 74,966.24 - Step 4: Simplify right side
135,395.60x = 14,007,574,634.24 - Step 5: Solve for x
x = 14,007,574,634.24/135,395.60 - Step 6: Final answer
x = 103,456.65
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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.